Mobile Analysis Laboratory for Ion Measurements – Versatile Use Compact kit for simultaneous determination of multiple water and environmental parameters The Horiba 4M LAQUAtwin Kit is a mobile laboratory that allows you to determine important ion parameters directly on-site. The case contains pocket testers for measuring sodium, potassium, nitrate, and calcium, as well as for temperature measurement. Each device uses ion-selective electrodes for targeted analysis of small samples and provides fast, reliable results. In addition to the four measurement devices, the kit includes calibration solutions and a wash/spray bottle for sensor cleaning. The sensors can be stored dry without special storage solutions. Compact Multi-Parameter Kit for Flexible On-Site Analyses The set is designed for measurement tasks where multiple ions need to be detected simultaneously, for example when monitoring drinking and process water, performing environmental checks of water bodies, conducting aquaculture analyses, or agricultural research. Thanks to the case, all essential testers including accessories are always on hand and ready for immediate use. The measurement results are available in a short time and are reliable and reproducible – ideal for routine and control measurements in the field. All components are neatly arranged in the case and ready for use at any time. An additional advantage is that the sensors can be stored dry without special storage solutions. Due to its compact design, the kit is particularly suitable for mobile applications where multiple ion parameters need to be determined quickly one after the other or in parallel. Why Multi-Parameter Ion Measurements Are Useful – and a Mobile Kit Is Ideal In many applications, not just a single measurement is important, but the interaction of multiple ion parameters. Sodium, potassium, nitrate, and calcium together influence water quality, biological processes, plant growth, and technical operations. Single measurements in a laboratory are often time-consuming and inflexible. A mobile analysis kit allows simultaneous detection of multiple parameters directly on-site. This allows relationships to be recognized more quickly, decisions to be made more reliably, and measurement campaigns to be carried out more efficiently. The Horiba 4M LAQUAtwin Kit combines these advantages in a compact, user-friendly system. Additional information We would like to inform you of an upcoming product update for the LAQUAtwin handheld analysers. To enhance product safety and prevent infants and young children from accidentally swallowing the batteries, HORIBA will be introducing a new battery cover on all LAQUAtwin pocket-sized analysers. Overview of the product change Change: Battery cover for enhanced safety. Reason: To prevent accidental swallowing of batteries. Production date: From January 2026 in Japan Deliveries to EMEA distribution partners: From March 2026 As this change is currently being rolled out, mixed deliveries of the current and updated versions may occur during the transition period. Frequently asked questions How long is the warranty period for HORIBA pocket testers? The warranty period is two years from delivery for commercial customers. How many measurements can be taken before the sensor needs to be replaced? This varies depending on the application, use and storage of the Horiba tester. As a rule, the sensor should be replaced after one year. How long is the warranty period for replacement sensors for pocket testers? The warranty period is 12 months after delivery for commercial customers. How do you clean the pocket tester? The pocket tester can be rinsed under water. We recommend cleaning with DI water (deionised). Tissue paper is recommended for drying after cleaning. How can the pocket tester be reset to factory settings? (e.g. in the event of an incorrect measurement result) This information can be found in the operating instructions. These can be found in the download area of the shop and on the product. Is calibration necessary before each measurement? Basically, yes. Further information can be found in the operating instructions.

The High-End LAQUA F-72 forms the top of the laboratory instruments series and measures the parameters pH, ORP, ion, as well as temperature. Ion selective parameters (each with his own electrode):  Ammonia ion (NH3), Calcium ion (Ca2+), Chloride ion (Cl-), Fluoride ion (F-), Nitrate Ion (NO3-), Potassium ion (K+) The auto-diagnostic function of the F- series allows the user to ensure that the instruments always provide powerful and reliable measurements. The LAQUA F-72 is fully GLP/GMP compliant and can be connected to an external printer. To ensure traceability, all results are recorded along with sample name, user ID and calibration information. The instrument offers you the proven calibration functions with automatic buffer recognition, stability display as well as the display of the electrode status (wear indicator). We offer a comprehensive range of conductivity electrodes suitable for all types of applications and samples. Known for their stability and durability, HORIBA's electrodes provide accurate measurements under all conditions.LAQUA's large capacitive touch screen panel:Large 5,7" (115,2 x 86,4 mm) graphic touch- color screen Display easy-to-understand menus for values and functionsEffortless single-touch operations- tap, flick and dragSwitch between real-time digital graphs or analogue displays during measurement with a single finger movement  Single channel displayExtensive on-screen support on the meter through an electronic user manual with colour images that can be accessed at any time and includes problem-solving instructions for calibration or measurementFeatures:Easy navigation for main instrument and electrode inspections Mode for periodic inspections: JIS/pharmacopoeia/digital simulator Customisable auto-hold function for calibration and measurement Simultaneous connection to a GLP/GMP compliant and a PC Digital memory - up to 2,000 measurement data sets can be recorded360° electrode stand which holds up to three electrodes and is height adjustable  USB PC communication and USB memory  Multilingual support (Japanese, English, Chinese, Korean)Scope of deliveryF-72 Meterelectrode standprotection coverpower adaptor with 6 plugsdata acquisition software in USB9615S-10D - refillable, glass-body pH electrode with integrated temperature sensor, 1m cable, BNC & phono jack502-S - each 1x pH 4.01, 7.00, 10.01, 3.33M KCl solution (250 ml)

The Dual Channel LAQUA F-73 forms the top of the laboratory instruments series and measures the parameters pH, ORP, ion, as well as temperature.  Ion selective parameters (each with his own electrode):  Ammonia ion (NH3), Calcium ion (Ca2+), Chloride ion (Cl-), Fluoride ion (F-), Nitrate Ion (NO3-), Potassium ion (K+) The auto-diagnostic function of the F- series allows the user to ensure that the instruments always provide powerful and reliable measurements. The LAQUA F-73 is fully GLP/GMP compliant and can be connected to an external printer. To ensure traceability, all results are recorded along with sample name, user ID and calibration information. The instrument offers you the proven calibration functions with automatic buffer recognition, stability display as well as the display of the electrode status (wear indicator). We offer a comprehensive range of conductivity electrodes suitable for all types of applications and samples. Known for their stability and durability, HORIBA's electrodes provide accurate measurements under all conditions.LAQUA's large capacitive touch screen panel:Large 5,7" (115,2 x 86,4 mm) graphic touch- color screen Display easy-to-understand menus for values and functionsEffortless single-touch operations- tap, flick and dragSwitch between real-time digital graphs or analogue displays during measurement with a single finger movement  Switchable single or dual channel displayExtensive on-screen support on the meter through an electronic user manual with colour images that can be accessed at any time and includes problem-solving instructions for calibration or measurementFeatures:Easy navigation for main instrument and electrode inspections Mode for periodic inspections: JIS/pharmacopoeia/digital simulator Customisable auto-hold function for calibration and measurement Simultaneous connection to a GLP/GMP compliant and a PC Digital memory - up to 2,000 measurement data sets can be recorded360° electrode stand which holds up to three electrodes and is height adjustable  USB PC communication and USB memory  Multilingual support (Japanese, English, Chinese, Korean)Scope of deliveryF-73 Meterelectrode standprotection coverpower adaptor with 6 plugsdata acquisition software in USB Manufacturer article number: 3200575123 (F-73G)

Multifunctional Dual-Channel Laboratory Meter for pH, Redox, Ion-Selective Parameters, and More Professional Horiba F-74 Laboratory Device for Simultaneous Analysis of Multiple Water and Ion Parameters The Horiba F-74 dual-channel laboratory device combines a wide range of analytical measurement methods for various parameters in a powerful system. It measures pH, redox, temperature, conductivity, resistance, salinity, TDS, and ion-selective parameters. The device operates with two independent channels: The first channel is designed for measuring pH, ion-selective parameters, mV, and redox potential. The second channel can measure conductivity, salinity, resistance, and TDS. Automatic buffer and calibration solutions, visual stability indicators, and integrated electrode status ensure reliable and repeatable results. This channel separation allows different parameters to be measured efficiently and simultaneously, supporting safe and convenient operation in the laboratory. Powerful Dual-Channel System for Precise Laboratory Analysis The Horiba F-74 is designed for laboratory environments where measurement accuracy, documentation, and process safety are crucial. Simultaneous recording of multiple parameters saves time and increases the analytical value, especially for complex samples. Its intuitive operation makes the device suitable for both routine analyses and demanding measurement tasks in research, quality control, and industry. Technical Highlights and Key Advantages of the Horiba F-74 Dual-Channel Laboratory Device The laboratory meter offers numerous features that simplify daily use and support compliance with standards: Touchscreen color display for intuitive control and clear visualization Automatic buffer and calibration recognition for reliable results GLP/GMP compliance for regulated applications Data storage and PC communication for easy archiving and analysis The combination of measurement versatility, user-friendliness, and high precision makes the Horiba F-74 an ideal solution for professional multi-parameter laboratory analyses. Frequently asked questions How long is the warranty period for HORIBA analysers? The warranty period is 2 years for the 300 (WQ) series and 1 year for the F series after delivery. Where can I find suitable replacement electrodes or buffer solutions? You can find the appropriate replacement electrodes and buffer solutions in the shop under the main item at the bottom of the cross-selling section. How do I clean the probe before calibration? The sensors should be cleaned with DI water (deionised). After cleaning, wipe them with tissue paper if possible.

Stress-free measurement - professional model Water quality analysis is repeatedly performed in laboratories on a daily basis. Our high-end benchtop model was developed to provide simplicity with excellent on-site usability - from operation and maintenance through to troubleshooting.Ideal for student training and routine applications. Good value for money: no bells and whistles that sounds good but is rarely used. From a renowned manufacturer whose company started with pH meters as early as 1945.Highly accurate measurements  Accepts up to 5 conductivity calibration points Automatic calibration at 84μS/cm, 1413μS/cm, 12.88mS/cm, & 111.8mS/cm standards Displays average calibration factor Selectable cell constant Allows 1-point salinity calibration and temperature calibration Pre-programmed TDS and salinity curves for various applicationsScope of delivery: Measuring device with integrated electrode stand Universal mains adapter with 6 plugs Operating instructions Starter set version additionally contains: 9382-10D plastic body conductivity electrode, cell constant k=1.0 84 µS/cm, 1413 µS/cm, 12.88 mS/cm conductivity standard (1 x 250ml each) with electrode holder Manufacturer article number:1300095721 (EC1500-S)

High-end laboratory measuring instrument for analytics  Dear customers, herewith we offer you our highly professional Horiba laboratory table-top measuring instrument of the 2000 series.  The LAQUA 2000 series laboratory tabletop meter has a very high-quality 5 inch display with backlighting which shows you all the important information, such as the measured value with up to three decimal places (depending on the resolution), the temperature, the date with time and much more.  The LAQUA 2000 series also offers you an adequate device memory with automatic data storage after a set time interval to document your daily measurements accurately over a long period of time. To protect the device settings from unauthorised access, they are password-protected. After your measurements, you can easily transfer all measurement data from the device to your PC via a USB cable in CSV, Excel and Pdf formats using the DAS20 software.  In order to facilitate your daily work with the device, the table measuring device visualises the correct calibration, the stable measurement as well as the electrode wear condition. The operation is intuitive because the available keys are marked with symbols and abbreviations. After the analysis, you can clean the device easily and in a time-saving manner with a damp cloth, as the surface is dirt-repellent due to its nature. With the electrode stand included in the scope of delivery, two electrodes can be held and adjusted in height. This allows you to individually align your electrode to your container or glass for calibration and measurement. Special features of the Laqua EC2000 model (multi-parameter): The EC2000 is a measuring instrument which evaluates the conductivity in various measuring ranges and also measures the TDS, resistance, salinity and temperature values. Conductivity-resistivity-TDS-salinity wide measuring range from 0.001μS/cm to 2,000 S/cm  allows automatic and manual conductivity calibrations  records individual and average calibration factors after conductivity calibration  Calculates resistance, TDS and salinity based on measured conductivity  7 conductivity ranges:   0.000 to 1.999 μS/cm (k = 0.1)  2.00 to 19.99 μS/cm (k = 0.1, 1)  20.0 to 199.9 μS/cm (k = 0.1, 1, 10)  200 to 1999 μS/cm (k = 0.1, 1, 10)  2.00 to 19.99 mS/cm (k = 0.1, 1, 10)  20.0 to 199.9 mS/cm (k = 1, 10)  0.200 to 2.000 S/cm (k = 10) Below we would like to show you in full the general functions of the Horiba LAQUA 2000 series: internal memory for up to 2000 data sets, measurement data with time and date information records and stores data in the unit memory based on a specified time interval a 4-digit password protects the meter set-up mode from unauthorised access data can be transferred to a computer and exported in the following formats CSV/Excel/PDF GLP/GMP  compliance of the instrument as data can be displayed, recorded and printed with date and time stamp on the instrument Software updates can be downloaded to the instrument Calibration reminder function, indicates that it is time to calibrate (alarm adjustable up to 90 days) Electrode holder is mounted on the meter and can hold up to 2 electrodes (rotates 360º and can be moved up and down 30cm) Displays measurement stability in measurement and calibration mode displays electrode condition based on calibration data smooth surface, easy cleaning RS-232/USB, therefore easy PC and printer connection and free instrument software Ergonomic design for easy viewing and operation Clearly labelled and easy-to-use ports for communication and measurement 5" digital display with backlight, shows all important measurement values and status Automatic calibration, recognises a wide range of standard solutionsadjustable switch-off time (up to 30 minutes) temperature compensation, the temperature in °C or °F is either automatically detected if a temperature sensor is connected (ATC mode) or manually entered by the user several measuring modes: Auto-Stable mode signals a stable measured value,Auto-Hold mode holds a stable measured valueReal Time mode continuously displays current readings small meter footprint of 155 x 150 mm, saves valuable space Temperature detection, easy display of sample temperature user selectable resolution, up to 3 digits Fixed and individual calibration pointsEasy navigation, navigate through the settings menu by up, down, right and left Scope of delivery: Measuring device with integrated electrode stand Universal mains adapter with 6 plugs Operating instructions Starter set version additionally contains 9382-10D conductivity electrode with plastic body, cell constant k=1.0 84 µS/cm, 1413 µS/cm, 12.88 mS/cm (1 x 250ml each) Flow cell available in combination with 9371-10 stainless steel conductivity cell for ultrapure water measurement (300-2C-C) Manufacturer part number:Meter only   EC2000 (3200896965) Starter-set   EC2000-S (1300098881)

High-end laboratory measuring instrument for analytics  Dear customers, herewith we offer you our highly professional Horiba laboratory table-top measuring instrument of the 2000 series.  The LAQUA 2000 series laboratory tabletop meter has a very high-quality 5 inch display with backlighting which shows you all the important information, such as the measured value with up to four decimal places in this version (depending on the resolution), the temperature, the date with time and much more.  The LAQUA 2000 series also offers you an adequate device memory with automatic data storage after a set time interval to document your daily measurements accurately over a long period of time. To protect the device settings from unauthorised access, they are password-protected. After your measurements, you can easily transfer all measurement data from the device to your PC via a USB cable in CSV, Excel and Pdf formats using the DAS20 software.  In order to facilitate your daily work with the device, the table measuring device visualises the correct calibration, the stable measurement as well as the electrode wear condition. The operation is intuitive because the available keys are marked with symbols and abbreviations. After the analysis, you can clean the device easily and in a time-saving manner with a damp cloth, as the surface is dirt-repellent due to its nature. With the electrode stand included in the scope of delivery, two electrodes can be held and adjusted in height. This allows you to individually align your electrode to your container or glass for calibration and measurement. Special features of the Laqua ION2000 model : The ION2000 is a laboratory meter to which you can connect the separately available ion-selective Horiba probes or determine the pH value and the redox value via the electrodes. Single input, connection of one electrode. Ions (ammonia, calcium, chloride, fluoride, nitrate, potassium)  Measurement ion-selective  accepts combined and half-cell ion-selective electrodes  wide measuring range from 0.000 μg/L to 9999 g/L  accepts up to 5 user-defined ion calibration points  choice of preferred units: μg/L - mg/L - g/L, ppm - ppt, mmol/L - mol/L  Resolution of 4 significant digits after the decimal point with automatic scaling  pH-ORP wide measuring range; -2.000 to 20.000 pH  high accuracy; ± 0.003 pH  resolution: 0.1, 0.01 or 0.001 pH  continuous display of calibrated points  display of offset and slope - by segment and average up to 5 pH  calibration points ± 2000.0 mV  1-point redox calibration  automatically recognises and calibrates USA, NIST, NIST2 and DIN pH buffers  allows CUST (Custom) buffers for manual calibration  Below we would like to show you in full the general functions of the Horiba LAQUA 2000 series:  internal memory for up to 2000 data sets, measurement data with time and date information  records and stores data in the unit memory based on a specified time interval  a 4-digit password protects the meter set-up mode from unauthorised access  data can be transferred to a computer and exported in the following formats CSV/Excel/PDF  GLP/GMP compliance of the instrument as data can be displayed, recorded and printed with date and time stamp on the instrument  Software updates can be downloaded to the instrument  Calibration reminder function, indicates that it is time to calibrate (alarm adjustable up to 90 days)  Electrode holder is mounted on the meter and can hold up to 2 electrodes (rotates 360º and can be moved up and down 30cm)  Displays measurement stability in measurement and calibration mode  displays electrode condition based on calibration data  smooth surface, easy cleaning  RS-232/USB, therefore easy PC and printer connection and free instrument software  Ergonomic design for easy viewing and operation  Clearly labelled and easy-to-use ports for communication and measurement  5" digital display with backlight, shows all important measurement values and status  Automatic calibration, recognises a wide range of standard solutions adjustable switch-off time (up to 30 minutes)  temperature compensation, the temperature in °C or °F is either automatically detected if a temperature sensor is connected (ATC mode) or manually entered by the user  several measuring modes:  Auto-Stable mode signals a stable measured value, Auto-Hold mode holds a stable measured value Real Time mode continuously displays current readings  small meter footprint of 155 x 150 mm, saves valuable space  Temperature detection, easy display of sample temperature user selectable resolution, up to 3 digits  Fixed and individual calibration points Easy navigation, navigate through the settings menu by up, down, right and left  Scope of delivery:  Measuring device with integrated electrode stand  Universal mains adapter with 6 plugs  Operating instructions  Manufacturer part number: Meter only ION2000 (3200896963) 

Stress-free measurement - professional model Water quality analysis is repeatedly performed in laboratories on a daily basis. Our multiparameter laboratory measuring instrument was developed to provide simplicity with excellent on-site usability - from operation and maintenance through to troubleshooting. Simultaneous measurement is possible by connecting two electrodes at the same time.Ideal for student training and routine applications. Good value for money: no bells and whistles that sounds good but is rarely used. From a renowned manufacturer whose company started with pH meters as early as 1945.Highly accurate measurements Automatic temperature compensation Accepts up to 6 pH- and up to 5 conductivity- calibration points Auto calibrates USA, NIST, & DIN pH buffers Displays offset & average slope Allows 1-point ORP-, salinity- and temperature- calibrationScope of delivery: Measuring device with integrated electrode stand Universal mains adapter with 6 plugs Operating instructions Starter set version additionally contains: 9625-10D refillable pH electrode with plastic body 9382-10D plastic body conductivity electrode, cell constant k=1.0 pH 4, 7 and 10 buffer solutions & 3.33M KCl (1 x 250ml each)84 µS/cm, 1413 µS/cm, 12.88 mS/cm conductivity standard (1 x 250ml each)with electrode holder Manufacturer article number:1300095722 (PC1500-SR)

High-end laboratory measuring instrument for analytics  Dear customers, herewith we offer you our highly professional Horiba laboratory table-top measuring instrument of the 2000 series.  The LAQUA 2000 series laboratory tabletop meter has a very high-quality 5 inch display with backlighting which shows you all the important information, such as the measured value with up to three decimal places (depending on the resolution), the temperature, the date with time and much more.  The LAQUA 2000 series also offers you an adequate device memory with automatic data storage after a set time interval to document your daily measurements accurately over a long period of time. To protect the device settings from unauthorised access, they are password-protected. After your measurements, you can easily transfer all measurement data from the device to your PC via a USB cable in CSV, Excel and Pdf formats using the DAS20 software.  In order to facilitate your daily work with the device, the table measuring device visualises the correct calibration, the stable measurement as well as the electrode wear condition. The operation is intuitive because the available keys are marked with symbols and abbreviations. After the analysis, you can clean the device easily and in a time-saving manner with a damp cloth, as the surface is dirt-repellent due to its nature. The electrode stand included in the starter set can be used to hold two electrodes and adjust their height. This allows you to individually align your electrode to your container or glass for calibration and measurement. Special features of the Laqua PC2000 model (multi-parameter): The PC2000 is a combination of the ION2000 and the EC2000 with the advantage that you can measure all parameters with one device. Dual input, connection of 2 electrodes at the same time. pH-ORP wide measuring range; -2.000 to 20.000 pH  high accuracy; ± 0.003 pH  resolution: 0.1, 0.01 or 0.001 pH  continuous display of calibrated points  display of offset and slope - by segment and average up to 5 pH  calibration points ± 2000.0 mV  1-point redox calibration  automatically recognises and calibrates USA, NIST, NIST2 and DIN pH buffers  allows CUST (Custom) buffers for manual calibration  Conductivity-resistivity-TDS-salinity wide measuring range from 0.001μS/cm to 2,000 S/cm  allows automatic and manual conductivity calibrations  records individual and average calibration factors after conductivity calibration  Calculates resistance, TDS and salinity based on measured conductivity  7 conductivity ranges:   0.000 to 1.999 μS/cm (k = 0.1)  2.00 to 19.99 μS/cm (k = 0.1, 1)  20.0 to 199.9 μS/cm (k = 0.1, 1, 10)  200 to 1999 μS/cm (k = 0.1, 1, 10)  2.00 to 19.99 mS/cm (k = 0.1, 1, 10)  20.0 to 199.9 mS/cm (k = 1, 10)  0.200 to 2.000 S/cm (k = 10) Ions (ammonia, calcium, chloride, fluoride, nitrate, potassium)  Measurement ion-selective accepts combined and half-cell ion-selective electrodes wide measuring range from 0.000 μg/L to 9999 g/L accepts up to 5 user-defined ion calibration points choice of preferred units: μg/L - mg/L - g/L, ppm - ppt, mmol/L - mol/L Resolution of 4 significant digits after the decimal point with automatic scaling  Below we would like to show you in full the general functions of the Horiba LAQUA 2000 series: internal memory for up to 2000 data sets, measurement data with time and date information records and stores data in the unit memory based on a specified time interval a 4-digit password protects the meter set-up mode from unauthorised access data can be transferred to a computer and exported in the following formats CSV/Excel/PDF GLP/GMP  compliance of the instrument as data can be displayed, recorded and printed with date and time stamp on the instrument Software updates can be downloaded to the instrument Calibration reminder function, indicates that it is time to calibrate (alarm adjustable up to 90 days) Electrode holder is mounted on the meter and can hold up to 2 electrodes (rotates 360º and can be moved up and down 30cm). Electrode holder only included in the starter set.Displays measurement stability in measurement and calibration mode displays electrode condition based on calibration data smooth surface, easy cleaning RS-232/USB, therefore easy PC and printer connection and free instrument software Ergonomic design for easy viewing and operation Clearly labelled and easy-to-use ports for communication and measurement 5" digital display with backlight, shows all important measurement values and status Automatic calibration, recognises a wide range of standard solutionsadjustable switch-off time (up to 30 minutes) temperature compensation, the temperature in °C or °F is either automatically detected if a temperature sensor is connected (ATC mode) or manually entered by the user several measuring modes: Auto-Stable mode signals a stable measured value,Auto-Hold mode holds a stable measured valueReal Time mode continuously displays current readings small meter footprint of 155 x 150 mm, saves valuable space Temperature detection, easy display of sample temperature user selectable resolution, up to 3 digits Fixed and individual calibration pointsEasy navigation, navigate through the settings menu by up, down, right and left Scope of delivery: Measuring device with integrated electrode stand Universal mains adapter with 6 plugs Operating instructions Starter set version additionally contains 9625-10D refillable pH electrode with plastic body 9382-10D conductivity electrode with plastic body, cell constant k=1.0 pH 4, 7 and 10 buffer solutions & 3.33M KCl (1 x 250ml each) 84 µS/cm, 1413 µS/cm, 12.88 mS/cm (1 x 250ml each) with electrode holderFlow cell available in combination with 9371-10 stainless steel conductivity cell for ultrapure water measurement (300-2C-C) Manufacturer part number:Meter only   PC2000 (3200896964) Starter-set   PC2000-SR (1300098882)

Stress-free measurement - professional model Water quality analysis is repeatedly performed in laboratories on a daily basis. Our high-end benchtop model was developed to provide simplicity with excellent on-site usability - from operation and maintenance through to troubleshooting.Ideal for student training and routine applications. Good value for money: no bells and whistles that sounds good but is rarely used. From a renowned manufacturer whose company started with pH meters as early as 1945.Highly accurate pH and ORP measurements Automatic temperature compensation Accepts up to 6 pH calibration points Auto calibrates USA, NIST, & DIN pH buffers Displays offset & average slope Allows 1-point ORP calibration and temperature calibrationScope of delivery: Measuring device with integrated electrode stand Universal mains adapter with 6 plugs Operating instructions Starter set version additionally contains: 9625-10D refillable pH electrode with plastic body pH 4, 7 and 10 buffer solutions & 3.33M KCl (1 x 250ml each)with electrode holder Manufacturer article number:1300095720 (PH1500-SR)

High-end laboratory measuring instrument for analytics  Dear customers, herewith we offer you our highly professional Horiba laboratory table-top measuring instrument of the 2000 series.  The LAQUA 2000 series laboratory tabletop meter has a very high-quality 5 inch display with backlighting which shows you all the important information, such as the measured value with up to three decimal places (depending on the resolution), the temperature, the date with time and much more.  The LAQUA 2000 series also offers you an adequate device memory with automatic data storage after a set time interval to document your daily measurements accurately over a long period of time. To protect the device settings from unauthorised access, they are password-protected. After your measurements, you can easily transfer all measurement data from the device to your PC via a USB cable in CSV, Excel and Pdf formats using the DAS20 software.  In order to facilitate your daily work with the device, the table measuring device visualises the correct calibration, the stable measurement as well as the electrode wear condition. The operation is intuitive because the available keys are marked with symbols and abbreviations. After the analysis, you can clean the device easily and in a time-saving manner with a damp cloth, as the surface is dirt-repellent due to its nature. The electrode stand included in the starter set can be used to hold two electrodes and adjust their height. This allows you to individually align your electrode to your container or glass for calibration and measurement. Special features of the LAQUA PH2000 model: The PH2000 allows you to measure the pH- or ORP- valuepH-ORP wide measuring range; -2.000 to 20.000 pH  high accuracy; ± 0.003 pH  resolution: 0.1, 0.01 or 0.001 pH  continuous display of calibrated points  display of offset and slope - by segment and average up to 5 pH  calibration points ± 2000.0 mV  1-point redox calibration  automatically recognises and calibrates USA, NIST, NIST2 and DIN pH buffers  allows CUST (Custom) buffers for manual calibration  Below we would like to show you in full the general functions of the Horiba LAQUA 2000 series: internal memory for up to 2000 data sets, measurement data with time and date information records and stores data in the unit memory based on a specified time interval a 4-digit password protects the meter set-up mode from unauthorised access data can be transferred to a computer and exported in the following formats CSV/Excel/PDF GLP/GMP  compliance of the instrument as data can be displayed, recorded and printed with date and time stamp on the instrument Software updates can be downloaded to the instrument Calibration reminder function, indicates that it is time to calibrate (alarm adjustable up to 90 days) Electrode holder is mounted on the meter and can hold up to 2 electrodes (rotates 360º and can be moved up and down 30cm) Displays measurement stability in measurement and calibration mode displays electrode condition based on calibration data smooth surface, easy cleaning RS-232/USB, therefore easy PC and printer connection and free instrument software Ergonomic design for easy viewing and operation Clearly labelled and easy-to-use ports for communication and measurement 5" digital display with backlight, shows all important measurement values and status Automatic calibration, recognises a wide range of standard solutionsadjustable switch-off time (up to 30 minutes) temperature compensation, the temperature in °C or °F is either automatically detected if a temperature sensor is connected (ATC mode) or manually entered by the user several measuring modes: Auto-Stable mode signals a stable measured value,Auto-Hold mode holds a stable measured valueReal Time mode continuously displays current readings small meter footprint of 155 x 150 mm, saves valuable space Temperature detection, easy display of sample temperature user selectable resolution, up to 3 digits Fixed and individual calibration pointsEasy navigation, navigate through the settings menu by up, down, right and left Scope of delivery: Measuring device with integrated electrode standUniversal mains adapter with 6 plugs Operating instructions Starter set version additionally contains 9625-10D refillable pH electrode with plastic body pH 4, 7 and 10 buffer solutions & 3.33M KCl (1 x 250ml each) with electrode holder Manufacturer part number:Meter only   PH2000 (3200896829) Starter-set   PH2000-SR (1300098880)

Thank you for your interest in our smart and customizable Horiba WQ-300 series instruments.The high-quality digital multi-parameter handheld meters with their generous color LCD display with LED backlight (7 cm x 5.2 cm) are ideally suited for use in the field under all conditions and in direct daylight.Use our configurator to freely select the suitable measuring device of the WQ-300 Horiba series (1 to 3 channels), the measuring parameters (sensor cartridges) and desired cable length (with integrated sensor receptacle + digital module) according to your wishes and requirements. At a later stage, you can always connect another available measurement parameter to the device via the corresponding sensor cable or carry it in the case as a supplement. As with other handheld measuring devices from Horiba, a major advantage of these devices is that the measuring devices are highly resistant to shock, slipping and scratching thanks to a special rubber coating. Only four standard AA 2500 mAh batteries are required for operation, and to give you more flexibility when you are on the move, the WQ-300 series devices can also be powered by a powerbank or battery pack via the integrated USB interface. The IP67 certification, which certifies dustproofness and protection against temporary submersion for up to 30 minutes at a water depth of one meter, completes the overall professional package, along with the usual ergonomic design and ease of user operation.  Horiba attests to its outstanding product quality by offering a three-year warranty on the LAQUA WQ-300 series handheld meters. Other added values and features:During analyses, the user is supported by the display of operating instructions in the form of smiley icons, which is supplemented by an LED status display on the sensor. This is intended to prevent operating errors, which can lead to implausible measurement results. The design decision to install only a small number of control buttons and not to implement any nested user menus serves to ensure that the devices can be operated easily and safely even during discontinuous use as well as when used by other users.  The measuring instruments have an electrode wear indicator, a measuring stability indicator on the instrument and sensor, a locking function to "save" the currently measured value on the display, free naming of the measuring point (8 characters), automatic calibration functions, integrated sensor holders, self-diagnosis function, as well as GLP functions. The fold-out stand on the back of the instruments means that you always have your hands free to carry out your measurements easily and safely. Measurement data can be conveniently transferred to your computer or cell phone via USB or WiFi.All handheld meters of the 300 series are delivered in a reinforced measuring case for mobile use in the open air. This provides space for the meter, for electrodes and cables, for up to eight 60 ml bottles of buffer solutions including an integrated buffer solution bottle holder for easier calibration. Particularly noteworthy is the automatic sensor recognition of the instrument through the use of sensor cables with integrated digital sensor recording. Information about the sensor, calibration data as well as measurement settings are stored in the sensor recording and transmitted to the measuring instrument. In addition, calibration of all connected sensors is possible at the same time, since each sensor head independently stores the measurement and calibration data and transmits it to the WQ300 series measuring device.Optionally, there is the possibility to connect and use analog sensors via the Horiba BNC sensor adapter with the device, please contact us for this.Languages:GermanEnglishFrenchSpanishPortugueseChineseScope of delivery:WQ-300 series handheld meter in a carrying casethe digital electrode you have chosen, if applicable, and the corresponding sensor-specific cable with integrated digital sensor receptaclemanualManufacturer article number single measuring device WQ-310-K 1 channel: 3200832605 Note: Chloride sensor, if selected, is supplied without chloride ion strength regulator and chloride electrode filling solution. This must be procured by the customer. Without the filling solution the sensor can´t be used. Why We Use These Measuring Devices in Water Treatment Precise calcium control is a key element of efficient water treatment – from drinking water purification and process water management to environmental analysis. Elevated calcium levels can lead to scaling, pipe damage, energy losses, and disruptions in chemical processes. For this purpose, we offer tailored high-end solutions from the Horiba LAQUA WQ Series (WQ310-K, WQ320-K, WQ330-K) in our online shop, specifically designed to meet the needs of water technology:  WQ310-K: Single-parameter solution for targeted measurements • WQ320-K: Simultaneous monitoring of, for example, calcium and conductivity • WQ330-K: Three-channel measurement for complex real-time multi-parameter analyses Why We Rely on These Devices: • They provide reliable data for controlling and optimizing water treatment systems • They offer digital evaluation, documented results, and interfaces for process integration • They are robust, packaged in a practical analysis case, and thus also suitable for mobile on-site use • They allow calcium to be measured in combination with other parameters such as pH, conductivity, or redox – for a holistic and efficient approach

Thank you for your interest in our smart and customizable Horiba WQ-300 series instruments.The high-quality digital multi-parameter handheld meters with their generous color LCD display with LED backlight (7 cm x 5.2 cm) are ideally suited for use in the field under all conditions and in direct daylight.Use our configurator to freely select the suitable measuring device of the WQ-300 Horiba series (1 to 3 channels), the measuring parameters (sensor cartridges) and desired cable length (with integrated sensor receptacle + digital module) according to your wishes and requirements. At a later stage, you can always connect another available measurement parameter to the device via the corresponding sensor cable or carry it in the case as a supplement. As with other handheld measuring devices from Horiba, a major advantage of these devices is that the measuring devices are highly resistant to shock, slipping and scratching thanks to a special rubber coating. Only four standard AA 2500 mAh batteries are required for operation, and to give you more flexibility when you are on the move, the WQ-300 series devices can also be powered by a powerbank or battery pack via the integrated USB interface. The IP67 certification, which certifies dustproofness and protection against temporary submersion for up to 30 minutes at a water depth of one meter, completes the overall professional package, along with the usual ergonomic design and ease of user operation.  Horiba attests to its outstanding product quality by offering a three-year warranty on the LAQUA WQ-300 series handheld meters. Other added values and features:During analyses, the user is supported by the display of operating instructions in the form of smiley icons, which is supplemented by an LED status display on the sensor. This is intended to prevent operating errors, which can lead to implausible measurement results. The design decision to install only a small number of control buttons and not to implement any nested user menus serves to ensure that the devices can be operated easily and safely even during discontinuous use as well as when used by other users.  The measuring instruments have an electrode wear indicator, a measuring stability indicator on the instrument and sensor, a locking function to "save" the currently measured value on the display, free naming of the measuring point (8 characters), automatic calibration functions, integrated sensor holders, self-diagnosis function, as well as GLP functions. The fold-out stand on the back of the instruments means that you always have your hands free to carry out your measurements easily and safely. Measurement data can be conveniently transferred to your computer or cell phone via USB or WiFi.All handheld meters of the 300 series are delivered in a reinforced measuring case for mobile use in the open air. This provides space for the meter, for electrodes and cables, for up to eight 60 ml bottles of buffer solutions including an integrated buffer solution bottle holder for easier calibration. Particularly noteworthy is the automatic sensor recognition of the instrument through the use of sensor cables with integrated digital sensor recording. Information about the sensor, calibration data as well as measurement settings are stored in the sensor recording and transmitted to the measuring instrument. In addition, calibration of all connected sensors is possible at the same time, since each sensor head independently stores the measurement and calibration data and transmits it to the WQ300 series measuring device.Optionally, there is the possibility to connect and use analog sensors via the Horiba BNC sensor adapter with the device, please contact us for this.Languages:GermanEnglishFrenchSpanishPortugueseChineseScope of delivery:WQ-300 series handheld meter in a carrying casethe digital electrode you have chosen, if applicable, and the corresponding sensor-specific cable with integrated digital sensor receptaclemanualManufacturer article number single measuring device WQ-320-K 2 channel: 3200832606 Note: Chloride sensor, if selected, is supplied without chloride ion strength regulator and chloride electrode filling solution. This must be procured by the customer. Without the filling solution the sensor can´t be used.

Horiba WQ330-K – Your Professional 3-Channel Water Quality Meter Expandable multi-parameter system for simultaneous measurement of pH, conductivity, redox, and other water parameters The Horiba LAQUA WQ330-K is a powerful multi-channel device for advanced water analysis, both on-site and in the laboratory. With three freely configurable measurement channels, it can simultaneously record parameters such as pH, conductivity, redox potential, TDS, temperature, oxygen, ammonia, calcium, chloride, nitrate, fluoride, and potassium. Intuitive operation, automatic sensor recognition, and digital calibration ensure accurate, fast, and reproducible measurements. Flexible Multi-Parameter System for Field and Laboratory Applications The analysis kit with the Horiba WQ330-K is ideal for environmental and water body monitoring, research and teaching, as well as drinking and process water control. The large LCD display with LED backlight ensures excellent readability even in direct sunlight. Measurement data can be exported and documented via USB or wirelessly, greatly simplifying traceability and analysis. The modular system allows the device to be quickly and precisely adapted to any measurement task. It is ideal for users who need to efficiently and reliably monitor multiple water parameters. Technical Features and Key Advantages of the WQ330-K The three measurement channels of the Horiba WQ330-K enable simultaneous recording of different water parameters, reducing measurement time and allowing better evaluation of relationships between parameters. The modular sensor concept allows flexible use of digital sensors, which are automatically recognized and store their calibration history. Notably, the combination of high measurement precision, user-friendliness, and mobility makes this device stand out. Quick deployment without complicated setup, along with easy data transfer for documentation and analysis, makes the Horiba LAQUA WQ330-K an ideal solution for professional water analytics. Note: During the promotional period, the discount on accessories will be automatically deducted at the shop’s checkout when purchased together with the HORIBA WQ330 device. Frequently asked questions How long is the warranty period for HORIBA analysers? The warranty period is 2 years for the 300 (WQ) series and 1 year for the F series after delivery. Where can I find suitable replacement electrodes or buffer solutions? You can find the appropriate replacement electrodes and buffer solutions in the shop under the main item at the bottom of the cross-selling section. How do I clean the probe before calibration? The sensors should be cleaned with DI water (deionised). After cleaning, wipe them with tissue paper if possible. Frequently asked questions about the promotion How long does the promotion run for? The promotion runs from 1 September 2026 to 31 December 2026. How do I get the discount on the accessories? The discount will be automatically deducted at the shop’s checkout when you purchase the HORIBA WQ330 unit at the same time.

Mobile Calcium Ion Tester from Horiba with Temperature Measurement – precise, compact, robust Handheld Ca²⁺ pocket tester with 2-point calibration and temperature display – ideal for water and environmental applications The mobile Horiba LAQUAtwin calcium ion tester measures both the Ca²⁺ concentration and the temperature of a sample. Equipped with an ion-selective sensor, a digital LCD display, and a minimal sample volume of only 0.3 ml (0.05 ml when using the sampling sheet), it delivers fast and reliable measurement results. Thanks to the integrated temperature display and automatic temperature compensation, calcium values can be measured accurately even under changing environmental conditions – making the device ideal for mobile applications. Mobile calcium ion tester for precise on-site measurements With two calibration points and automatic standard recognition (150 and 2000 ppm), the device can be flexibly adapted to different measurement situations. Temperature-compensated measurement, multiplicative compensation, automatic stability and hold modes, as well as automatic shut-off ensure easy and reliable operation. The tester is dustproof and waterproof according to IP67 and offers a long battery life of approximately 400 hours. It is supplied complete with standard solutions, sampling sheets, pipette, and batteries. Why calcium measurement is important – optimal results with the Horiba handheld tester Calcium is a key parameter in water, environmental, aquaculture, and food analysis. Calcium concentration influences water hardness, biological processes, coral growth, and product quality in beverages and food. Deviations can lead to ecological, technical, or quality-related impacts. A mobile calcium handheld tester allows fast analysis directly at the point of use without complex laboratory procedures. This makes it possible to detect changes immediately and take timely action. The Horiba LAQUAtwin calcium tester combines this flexibility with high measurement accuracy, simple operation, and a robust design. Typical applications of the Horiba LAQUAtwin calcium tester Aquaculture and corals Laboratories and schools Water treatment Beverages and food Additional information We would like to inform you of an upcoming product update for the LAQUAtwin handheld analysers. To enhance product safety and prevent infants and young children from accidentally swallowing the batteries, HORIBA will be introducing a new battery cover on all LAQUAtwin pocket-sized analysers. Overview of the product change Change: Battery cover for enhanced safety. Reason: To prevent accidental swallowing of batteries. Production date: From January 2026 in Japan Deliveries to EMEA distribution partners: From March 2026 As this change is currently being rolled out, mixed deliveries of the current and updated versions may occur during the transition period. Frequently asked questions How long is the warranty period for HORIBA pocket testers? The warranty period is two years from delivery for commercial customers. How many measurements can be taken before the sensor needs to be replaced? This varies depending on the application, use and storage of the Horiba tester. As a rule, the sensor should be replaced after one year. How long is the warranty period for replacement sensors for pocket testers? The warranty period is 12 months after delivery for commercial customers. How do you clean the pocket tester? The pocket tester can be rinsed under water. We recommend cleaning with DI water (deionised). Tissue paper is recommended for drying after cleaning. How can the pocket tester be reset to factory settings? (e.g. in the event of an incorrect measurement result) This information can be found in the operating instructions. These can be found in the download area of the shop and on the product. Is calibration necessary before each measurement? Basically, yes. Further information can be found in the operating instructions.

Find out more about the accuracy of HORIBA’s pocket conductivity testers: your ideal choice for precise conductivity measurements. The EC-11, EC-22 and EC-33 models, manufactured in Japan, represent the pinnacle of quality in pocket testers. They offer numerous benefits for users in laboratories, industry, aquaculture, water treatment, schools and universities, as well as amateur gardeners. An overview of the HORIBA Conductivity Pocket Tester series: Model EC-11: Water resistance, micro-sample analysis from 0.12 ml and a conductivity measurement range of up to 19.99 mS/cm are the key features of these instruments. They are straightforward to use and maintain, ensuring long-term reliability. Model EC-22: Offers a larger temperature display and a wider measurement range. Perfect for advanced applications where the temperature of the medium must be determined for detailed analysis. Model EC-33: With the widest measurement range, TDS measurement capability and advanced features, this model sets new standards. For professionals who need to carry out the most precise measurements under varying conditions. Applications and benefits for the user: ‘Immersion’: Direct measurement is possible in solutions. For example, you can immerse the tester in a beaker and determine the value. ‘Scoop’: The hinged lid, which acts as a scoop here, allows you to easily take a sample from a hard-to-reach area. ‘Drops’: Efficient analysis of the smallest volumes. Thanks to their user-friendliness, durability and ‘Made in Japan’ quality, HORIBA pocket conductivity testers are a reliable solution for a variety of measurement applications. Manufacturer’s item number: 3999960126 LAQUAtwin EC-22: The world’s first pocket-sized conductivity meter Your mobile laboratory – for on-site use: Ideal for water quality testing in aquariums, foodstuffs and many other applications. HORIBAs unique compact analyser integrates the electrode, display and sample chamber to enable simple, effective on-site testing through direct measurement using a single drop. Minimum sample volume: 0.12 ml Up to 3 calibration points Conductivity and temperature display Automatic range Automatic calibration Automatic standard recognition: 1413 µS/cm, 12.88 mS/cm, 111.8 mS/cm Automatic temperature compensation: 2%/°C fixed Temperature calibration: 5 to 40.0 °C Automatic stabilisation / automatic hold measurement Automatic switch-off: 30 mins Low battery indicator IP67 rating: dust and water resistant Replaceable sensor 400-hour battery life: continuous operation without backlight Materials: ABS-epoxy housing and titanium coating with platinum-black sensor Display: custom (monochrome) LCD with backlight Operating conditions: 5 to 40°C, 85% or less relative humidity Warranty: 2 years – meter, 6 months – sensor Packaged in a handy carrying case Supplied with 1413 µS/cm & 12.88 mS/cm conductivity standards (14 ml each), conditioning solution (4 ml), 2 x CR2032 batteries, dropper, instructions and quick start guide Additional information We would like to inform you of an upcoming product update for the LAQUAtwin pocket-sized analysers. To enhance product safety and prevent accidental swallowing of the batteries by infants and young children, HORIBA will be introducing a new battery cover on all LAQUAtwin pocket-sized analysers. Overview of the product change Change: Battery cover for increased safety. Reason: To prevent accidental swallowing of batteries. Production date: from January 2026 in Japan Deliveries to EMEA distribution partners: from March 2026 As this change is currently being rolled out, you may receive mixed deliveries of the current and updated versions during the transition period. Please note: The EC4 replacement sensors, both old and new, are not compatible with each other. Similarly, the conditioning solutions for the old and new versions are not compatible with the respective device variants. How can you tell if you have an older or a new device? If your Pocket Tester is marked ‘4-cell’, you have the latest version of this device. In this case, you will need the replacement sensors listed in the cross-selling section, as well as the standard and conditioning solutions. These have been specially optimised for the new Pocket Testers and are not suitable for the older models.

Precise Nitrate Tester for Plants – Mobile NO₃⁻ Analysis On-Site Horiba Nitrate Ion Pocket Tester Kit for fast and accurate on-site results The Horiba LAQUAtwin Nitrate Ion Hand Tester (NO3-11C) in its practical analysis kit is your mobile laboratory for reliable determination of nitrate ions and temperature in plant sap samples. With a wide measurement range of 6 to 9900 ppm NO₃⁻ and automatic temperature compensation, the device provides fast and accurate results. The ion-selective electrode ensures precise NO₃⁻ measurements, while the digital backlit display allows quick and easy reading of values. Mobile nitrate analysis kit for plants, water, and environmental monitoring The kit contains the handheld tester, five pipettes, three measuring cups, a plant sample press, standard solutions, and sampling sheets. This setup allows for rapid and reproducible analysis of plant sap without the need for additional laboratory equipment. The device is dust- and waterproof, features automatic standard recognition, Auto-Stabil and Auto-Hold functions, and has a long battery life, making it ideal for mobile use in the field, greenhouse, or laboratory. Why nitrate measurement in plants is important – and why a mobile kit is ideal Nitrate content in plants is a key indicator of nutrient supply, plant growth, and agricultural product quality. Excessively high or low nitrate levels can negatively impact yield, plant quality, and environmental compatibility. A mobile nitrate hand tester allows direct analysis of plant sap on-site, without time-consuming laboratory procedures. Fertilization and irrigation measures can be precisely adjusted, and over- or under-supply can be detected early. The Horiba LAQUAtwin NO3-11C provides a precise, fast, and practical solution for this purpose. Typical applications for the Horiba Nitrate Analysis Kit Aquaculture and coral monitoring Aquaristics Horticulture Beverage and food production Laboratories and schools Environmental monitoring Water treatment Water conditioning Additional information We would like to inform you of an upcoming product update for the LAQUAtwin handheld analysers. To enhance product safety and prevent infants and young children from accidentally swallowing the batteries, HORIBA will be introducing a new battery cover on all LAQUAtwin pocket-sized analysers. Overview of the product change Change: Battery cover for enhanced safety. Reason: To prevent accidental swallowing of batteries. Production date: From January 2026 in Japan Deliveries to EMEA distribution partners: From March 2026 As this change is currently being rolled out, mixed deliveries of the current and updated versions may occur during the transition period. Frequently asked questions How long is the warranty period for HORIBA pocket testers? The warranty period is two years from delivery for commercial customers. How many measurements can be taken before the sensor needs to be replaced? This varies depending on the application, use and storage of the Horiba tester. As a rule, the sensor should be replaced after one year. How long is the warranty period for replacement sensors for pocket testers? The warranty period is 12 months after delivery for commercial customers. How do you clean the pocket tester? The pocket tester can be rinsed under water. We recommend cleaning with DI water (deionised). Tissue paper is recommended for drying after cleaning. How can the pocket tester be reset to factory settings? (e.g. in the event of an incorrect measurement result) This information can be found in the operating instructions. These can be found in the download area of the shop and on the product. Is calibration necessary before each measurement? Basically, yes. Further information can be found in the operating instructions.

The LAQUAtwin Nitrate Ion Handheld Tester (NO3-11C) included in the analysis kit is pre-set by the factory to the relevant calibration points 30PPM and 300PPM for soil analysis. Manufacturer Part No. 3200689164  | B-742 Additional information We would like to inform you of an upcoming product update for the LAQUAtwin handheld analysers. To enhance product safety and prevent infants and young children from accidentally swallowing the batteries, HORIBA will be introducing a new battery cover on all LAQUAtwin pocket-sized analysers. Overview of the product change Change: Battery cover for enhanced safety. Reason: To prevent accidental swallowing of batteries. Production date: From January 2026 in Japan Deliveries to EMEA distribution partners: From March 2026 As this change is currently being rolled out, mixed deliveries of the current and updated versions may occur during the transition period.

Horiba LAQUAtwin Nitrate Ion Tester NO3-11 for Precise On-Site Measurements Handheld tester with 2-point calibration, ideal for water and environmental measurements The Horiba LAQUAtwin Nitrate Ion Tester (NO3-11) is a portable device for direct determination of nitrate ions (NO3) and temperature in liquids and samples. Thanks to the ion-selective electrode and compact design, the tester delivers fast and reliable results. The integrated temperature unit enables temperature-compensated analysis and clearly displays both nitrate and temperature values on the digital LCD display. Mobile Nitrate Ion Tester for Precise On-Site Analyses The integrated temperature measurement enables temperature-compensated analysis and shows both nitrate and temperature values. Only very small sample volumes are required, minimizing sample consumption and increasing efficiency in daily use. The tester can be set up with up to two calibration points, with features such as automatic standard recognition, adjustable calibration values, and multiplication compensation for flexibility. Only minimal sample volumes are needed for each analysis, reducing sample usage and improving efficiency. Why Nitrate Measurement Is Crucial – and a Pocket Tester from Horiba Is Ideal Nitrate measurement plays a central role in agriculture, water management, and environmental monitoring. Elevated nitrate concentrations can affect drinking water quality, stress ecosystems, and contribute to over-fertilization. At the same time, nitrate is an essential nutrient for plants, and targeted control is vital for sustainable agriculture. A mobile nitrate pocket tester enables rapid on-site analysis without time-consuming laboratory tests. This allows early detection of contamination, immediate action, and reliable monitoring of legal limits. The Horiba LAQUAtwin NO3-11 combines this flexibility with high measurement accuracy and easy operation – ideal for routine checks and scientific applications. The tester can be configured with up to two calibration points. Features like automatic standard recognition, adjustable calibration values, and multiplication compensation provide high adaptability to different sample types and measurement conditions. Typical Applications of the Horiba LAQUAtwin Nitrate Ion Tester (NO3-11) Agriculture: To optimize fertilizer use, promote plant growth, and minimize environmental impact, farmers and agronomists use the tester to monitor nitrate levels in soils and irrigation water. Water Quality Management: To maintain nitrate concentrations within safe limits, the NO3-11 is used in water management to check drinking and wastewater quality. Environmental Monitoring: The NO3-11 allows environmental technicians and scientists to quickly analyze nitrate contamination in rivers, lakes, and groundwater, ensuring compliance with environmental standards and identifying pollution sources. Research and Development: The tester is used by scientists in environmental science, hydrology, and soil science to conduct detailed studies of the nitrogen cycle and the effects of nitrates on ecosystems. Additional information We would like to inform you of an upcoming product update for the LAQUAtwin handheld analysers. To enhance product safety and prevent infants and young children from accidentally swallowing the batteries, HORIBA will be introducing a new battery cover on all LAQUAtwin pocket-sized analysers. Overview of the product change Change: Battery cover for enhanced safety. Reason: To prevent accidental swallowing of batteries. Production date: From January 2026 in Japan Deliveries to EMEA distribution partners: From March 2026 As this change is currently being rolled out, mixed deliveries of the current and updated versions may occur during the transition period. Frequently asked questions How long is the warranty period for HORIBA pocket testers? The warranty period is two years from delivery for commercial customers. How many measurements can be taken before the sensor needs to be replaced? This varies depending on the application, use and storage of the Horiba tester. As a rule, the sensor should be replaced after one year. How long is the warranty period for replacement sensors for pocket testers? The warranty period is 12 months after delivery for commercial customers. How do you clean the pocket tester? The pocket tester can be rinsed under water. We recommend cleaning with DI water (deionised). Tissue paper is recommended for drying after cleaning. How can the pocket tester be reset to factory settings? (e.g. in the event of an incorrect measurement result) This information can be found in the operating instructions. These can be found in the download area of the shop and on the product. Is calibration necessary before each measurement? Basically, yes. Further information can be found in the operating instructions.

HORIBA pH Handheld Tester – Ideal for Water and Environmental Analysis Precise pH measurements on-site – compact, reliable, and easy to use The Horiba LAQUAtwin pH tester is ideal for water quality testing in rivers, drinking water, and process water. With a measurement range of 0.0 to 14.0 pH and a 2-point calibration, the tester is suitable for a wide range of pH analyses. Just a single drop of sample provides quick and reliable measurement results. The tester combines electrode, display, and sample container in a robust IP67-rated housing that is dust- and waterproof. The digital display with backlight shows both pH and mV values. Features such as automatic stability detection and Auto-Hold simplify operation. With up to 400 hours of battery life, the tester is suitable for extended measurement series. Included are calibration buffer solutions (pH 4.01 & 7.00), batteries, pipette, instruction manual, and a carrying case. Handheld pH tester for fast and precise results With its wide measurement range and 2-point calibration, the Horiba LAQUAtwin pH tester is suitable for a variety of pH analyses. Even a single drop of sample is enough to obtain fast and accurate results. Its compact design makes the mobile pH tester highly user-friendly and allows on-site measurements without complex sample preparation or laboratory infrastructure. Robust, waterproof design with comprehensive features The tester integrates the electrode, display, and sample container in a robust IP67-rated housing that is dust- and waterproof. The digital backlit display clearly shows pH and mV values. Features like automatic stability detection and Auto-Hold simplify daily use. With a battery life of up to 400 hours, the tester is suitable for long measurement series. The package includes calibration buffer solutions (pH 4.01 & 7.00), batteries, pipette, instruction manual, and a practical carrying case. Typical applications of the Horiba LAQUAtwin pH Pocket Tester Aquaculture and corals Aquariums Beer, beverages, and food Heating systems Laboratories and schools Horticulture Water treatment Additional information We would like to inform you of an upcoming product update for the LAQUAtwin handheld analysers. To enhance product safety and prevent infants and young children from accidentally swallowing the batteries, HORIBA will be introducing a new battery cover on all LAQUAtwin pocket-sized analysers. Overview of the product change Change: Battery cover for enhanced safety. Reason: To prevent accidental swallowing of batteries. Production date: From January 2026 in Japan Deliveries to EMEA distribution partners: From March 2026 As this change is currently being rolled out, mixed deliveries of the current and updated versions may occur during the transition period. Frequently asked questions How long is the warranty period for HORIBA pocket testers? The warranty period is two years from delivery for commercial customers. How many measurements can be taken before the sensor needs to be replaced? This varies depending on the application, use and storage of the Horiba tester. As a rule, the sensor should be replaced after one year. How long is the warranty period for replacement sensors for pocket testers? The warranty period is 12 months after delivery for commercial customers. How do you clean the pocket tester? The pocket tester can be rinsed under water. We recommend cleaning with DI water (deionised). Tissue paper is recommended for drying after cleaning. How can the pocket tester be reset to factory settings? (e.g. in the event of an incorrect measurement result) This information can be found in the operating instructions. These can be found in the download area of the shop and on the product. Is calibration necessary before each measurement? Basically, yes. Further information can be found in the operating instructions.

Mobile pH Tester with 3-Point Calibration for On-the-Go Use Horiba LAQUAtwin pH Tester – ideal for water and environmental analysis The Horiba LAQUAtwin pH Tester pH-22 is compact, robust, and designed for mobile use. With up to three calibration points and a measurement range of 0.00 to 14.00 pH, this device delivers high precision and reliability. Direct measurement with just a single drop of sample provides fast results. Features such as automatic buffer recognition, temperature compensation, and Stabil/Hold functionality make daily operation simple and convenient. Mobile precision pH tester for reliable on-site measurements The tester combines electrode, display, and sample container in a dust- and waterproof IP67 housing, making it ideal for field and laboratory applications. The digital backlit display shows pH and mV values clearly and accurately. Automatic shut-off and battery status indicators ensure convenient operation. The package includes calibration buffer solutions (pH 4.01 and 7.00), batteries, a pipette, and a quick-start guide. Why accurate pH measurement is critical – and why a handheld tester is ideal pH is a key parameter in water, environmental, and process analysis because it significantly influences chemical reactions, biological processes, and material stability. Even small deviations can substantially impact water quality, product quality, or process safety. A mobile handheld pH tester allows fast, reliable measurements directly on site. Changes can be detected immediately, and corrective actions implemented without delay. The Horiba LAQUAtwin pH-22 combines this flexibility with high measurement precision, making it ideal for field, laboratory, and routine applications. Typical applications for the Horiba LAQUAtwin pH handheld tester Aquaculture and coral monitoring Beer, beverage, and food production Heating systems Laboratories and schools Environmental analysis Water treatment Horticulture Additional information We would like to inform you of an upcoming product update for the LAQUAtwin handheld analysers. To enhance product safety and prevent infants and young children from accidentally swallowing the batteries, HORIBA will be introducing a new battery cover on all LAQUAtwin pocket-sized analysers. Overview of the product change Change: Battery cover for enhanced safety. Reason: To prevent accidental swallowing of batteries. Production date: From January 2026 in Japan Deliveries to EMEA distribution partners: From March 2026 As this change is currently being rolled out, mixed deliveries of the current and updated versions may occur during the transition period. Frequently asked questions How long is the warranty period for HORIBA pocket testers? The warranty period is two years from delivery for commercial customers. How many measurements can be taken before the sensor needs to be replaced? This varies depending on the application, use and storage of the Horiba tester. As a rule, the sensor should be replaced after one year. How long is the warranty period for replacement sensors for pocket testers? The warranty period is 12 months after delivery for commercial customers. How do you clean the pocket tester? The pocket tester can be rinsed under water. We recommend cleaning with DI water (deionised). Tissue paper is recommended for drying after cleaning. How can the pocket tester be reset to factory settings? (e.g. in the event of an incorrect measurement result) This information can be found in the operating instructions. These can be found in the download area of the shop and on the product. Is calibration necessary before each measurement? Basically, yes. Further information can be found in the operating instructions.

Manufacturer Part No. 3999960124 LAQUAtwin PH-33: The world's first pocket-sized PH meter Your mobile laboratory - for use on site: Ideal for water quality testing in aquatic, drinking and process water and many other applications. HORIBA's unique compact meter integrates electrode, display and sample container to enable simple, effective on-site testing by direct measurement with a single drop. Minimum sample volume: 0.1 ml (0.05 ml with sampling sheet B) Up to 5 calibration points pH, mV and temperature display Automatic calibration Automatic buffer recognition: USA & NIST pH buffers Automatic temperature compensation Temperature calibration: 5 to 40.0 ºC Automatic stable / automatic hold measurement Automatic switch off: 30 min. Low battery indicator IP67 rating dust and waterproof Replaceable sensor 400 hours battery life: continuous operation without backlight Material: ABS epoxy Display: customised (monochrome) LCD with backlight Operating conditions: 5 to 40°C, 85% or less relative humidity Warranty: 2 years - meter, 6 months - sensor Packed in a practical carrying case Supplied with pH 4.01 & 7.00 buffers (14ml each), 2 x CR2032 batteries, dropper, instructions and quick reference guide Additional information We would like to inform you of an upcoming product update for the LAQUAtwin handheld analysers. To enhance product safety and prevent infants and young children from accidentally swallowing the batteries, HORIBA will be introducing a new battery cover on all LAQUAtwin pocket-sized analysers. Overview of the product change Change: Battery cover for enhanced safety. Reason: To prevent accidental swallowing of batteries. Production date: From January 2026 in Japan Deliveries to EMEA distribution partners: From March 2026 As this change is currently being rolled out, mixed deliveries of the current and updated versions may occur during the transition period.

Precise Potassium Ion Measurement on the Go – Mobile, Reliable, and Easy Precise potassium ion measurement with 2-point calibration and integrated temperature display The Horiba K-11 Potassium Pocket Tester was designed to determine potassium in a wide variety of samples with high precision. Thanks to the ion-selective electrode and the digital LCD screen with backlight, the tester is perfect for mobile water quality and environmental analyses. The minimal sample volume of only 0.3 ml (0.05 ml with sampling sheet) ensures reliable results even with small sample sizes. With its 2-point calibration and automatic standard recognition, the device can be flexibly adapted to different measurement conditions. The IP67 rating for dust and water protection, along with a long battery life of up to approximately 400 hours, makes the tester highly reliable for mobile use. Technical Features for Reproducible Potassium Measurements The potassium tester covers a wide measurement range from 4 to 9,900 ppm (mg/L) and additionally displays temperatures up to 50 °C with a resolution of 0.1 °C. The integrated temperature compensation ensures stable results even under changing environmental conditions. Automatic standard recognition, adjustable calibration values, and multiplication compensation guarantee high reproducibility across different sample types. This makes the K-11 suitable for both routine and demanding analytical tasks. Why Potassium Measurement Is Important – Ideal with the Horiba K-11 Hand Tester Potassium is an essential parameter in water, environmental, agricultural, and food analysis. In water bodies, potassium content affects water quality, in soils it is a key nutrient for healthy plant growth, and in food it plays an important role for nutrition and labeling requirements. A mobile potassium hand tester enables rapid on-site analysis without time-consuming laboratory testing. Changes can be detected immediately, and decisions can be made right away. The Horiba K-11 combines this flexibility with high measurement accuracy and ease of use – ideal for fieldwork, routine checks, and scientific studies. Where Can It Be Used? Environmental Monitoring: The K-11 is a fast and precise measurement tool for environmental technicians and scientists monitoring potassium concentrations in water bodies to ensure water quality and identify contamination sources. Agriculture: The K-11 allows farmers and agronomists to measure potassium in soil. This is crucial for fertilizer application and improving plant growth. Easy evaluation of soil extracts enables precise nutrient requirement determination. Food Industry: The tester is used by quality assurance personnel to check potassium content in beverages and food. These measurements are important for product development, health assessments, and compliance with nutritional labeling requirements. Teaching, Research, and Development: By deepening the understanding of potassium’s role in biological and chemical processes, the K-11 serves researchers and educators as a useful tool for experimental studies and educational purposes. Additional information We would like to inform you of an upcoming product update for the LAQUAtwin handheld analysers. To enhance product safety and prevent infants and young children from accidentally swallowing the batteries, HORIBA will be introducing a new battery cover on all LAQUAtwin pocket-sized analysers. Overview of the product change Change: Battery cover for enhanced safety. Reason: To prevent accidental swallowing of batteries. Production date: From January 2026 in Japan Deliveries to EMEA distribution partners: From March 2026 As this change is currently being rolled out, mixed deliveries of the current and updated versions may occur during the transition period. Frequently asked questions How long is the warranty period for HORIBA pocket testers? The warranty period is two years from delivery for commercial customers. How many measurements can be taken before the sensor needs to be replaced? This varies depending on the application, use and storage of the Horiba tester. As a rule, the sensor should be replaced after one year. How long is the warranty period for replacement sensors for pocket testers? The warranty period is 12 months after delivery for commercial customers. How do you clean the pocket tester? The pocket tester can be rinsed under water. We recommend cleaning with DI water (deionised). Tissue paper is recommended for drying after cleaning. How can the pocket tester be reset to factory settings? (e.g. in the event of an incorrect measurement result) This information can be found in the operating instructions. These can be found in the download area of the shop and on the product. Is calibration necessary before each measurement? Basically, yes. Further information can be found in the operating instructions.

LAQUAtwin SALT-22: The world’s first pocket-sized salinity meter. Your mobile laboratory – for on-site use: Ideal for water quality testing in aquariums, foodstuffs and many other applications. HORIBAs unique compact meter integrates the electrode, display and sample chamber to enable simple, effective on-site testing through direct measurement with a single drop. Minimum sample volume: 0.3 ml (0.05 ml with sample sheet B) Display of salinity, mV and temperature Up to 2 calibration points Automatic calibration Automatic standard recognition: 0.5 & 5.0% NaCl (standard) Adjustable high and low calibration values Temperature calibration: 5 to 40.0 ºC Automatic stabilisation / automatic hold measurement Automatic switch-off: 30 mins Low battery indicator IP67 rated dust and waterproof Replaceable sensor 400-hour battery life: continuous operation without backlight Material: ABS-epoxy Display: custom (monochrome) digital LCD with backlight Operating conditions: 5 to 40 ºC, 85% or less relative humidity Warranty: 2 years – meter; 6 months – sensor Packaged in a handy carrying case Manufacturer’s item number: 3200689158 Supplied with 0.5% and 5.0% NaCl standards (14 ml each), 5 x Sample Form B, 2 x CR2032 batteries, pipette, instructions and quick guide Additional information We would like to inform you of an upcoming product update for the LAQUAtwin pocket meters. To enhance product safety and prevent infants and young children from accidentally swallowing the batteries, HORIBA will be introducing a new battery cover on all LAQUAtwin pocket-sized analysers. Overview of the product change Change: Battery cover for enhanced safety. Reason: To prevent accidental swallowing of batteries. Production date: from January 2026 in Japan Deliveries to EMEA distribution partners: from March 2026 As this change is currently being rolled out, mixed deliveries of the current and updated versions may occur during the transition phase. Please note: The salt exchange sensors, both old and new, are not compatible with each other. Similarly, the conditioning solutions for the old and new versions are not compatible with the respective device variants. How can you tell if you have an older or a new device? If your Pocket Tester is marked ‘4-cell’, you have the latest version of this device. In this case, you will need the replacement sensors listed in the cross-selling section, as well as the standard and conditioning solutions. These have been specially optimised for the new Pocket Testers and are not suitable for older models.