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)

The high-quality multi-parameter handheld meters of the HORIBA LAQUA 200 series are suitable for use in the field under any conditions and in direct daylight, thanks to their monochrome LCD display with LED backlight. Another advantage of these devices is that the handheld meters are highly resistant to shocks and scratches due to their special rubber coating and offer a long operating time thanks to the AA 2500 mAh batteries used. An IP67 certification, which confirms dust-tightness and protection against temporary immersion for up to 30 minutes at a water depth of one metre, completes the professional overall package alongside the ergonomic design and easy operation. Confident in the quality of its products, HORIBA offers a three-year warranty on the handheld measuring devices of the LAQUA 200 series. During measurements, users are supported by instructions displayed in the form of smiley symbols. This helps prevent operating errors that could lead to implausible measurement results. Furthermore, the measuring device features only 9 buttons and no menu texts. This design decision helps ensure that the device remains easy to operate, even when used intermittently or by different users. Functions and Features HORIBA meters feature an electrode wear indicator, a hold function to "save" the current measured value on the display, automatic calibration functions and a self-diagnostic function. The fold-out stand on the back of the devices allows users to keep their hands free and carry out measurements easily and safely. Kit Versions for Mobile Use Instruments marked as "Kit" are supplied in a reinforced measuring case for mobile outdoor use. The case contains the replaceable measuring electrode, the corresponding cable for connecting the electrode to the device, as well as suitable buffer or calibration solutions and instructions. If measurements of different parameters are required using different electrodes, the electrodes can simply be connected together at the upper section and then immersed in the measuring solution. PH220 Version with GLP Functions Storage capacity of 1000 measurement data sets instead of 500 data sets. Measurement and calibration data are stored in compliance with GLP requirements, including date and time stamps. PC communication via optional USB cable. RS232 printer function for printing measurement data. Scope of Delivery PH210 or PH220 handheld meter Robust measuring case Instruction manual and quick reference guide Manufacturer Article Numbers PH210: 3200779537 PH220: 3200779538 Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required.

The high-quality multi-parameter handheld meters of the HORIBA LAQUA 200 series are suitable for use in the field under any conditions and in direct daylight, thanks to their monochrome LCD display with LED backlight. Another advantage of these devices is that the handheld meters are highly resistant to shocks and scratches due to their special rubber coating and offer a long operating time thanks to the AA 2500 mAh batteries used. An IP67 certification, which confirms dust-tightness and protection against temporary immersion for up to 30 minutes at a water depth of one metre, completes the professional overall package alongside the ergonomic design and easy operation. Confident in the quality of its products, HORIBA offers a three-year warranty on the handheld measuring devices of the LAQUA 200 series. During measurements, users are supported by instructions displayed in the form of smiley symbols. This helps prevent operating errors that could lead to implausible measurement results. Furthermore, the measuring device features only 9 buttons and no menu texts. This design decision helps ensure that the device remains easy to operate, even when used intermittently or by different users. Functions and Features HORIBA meters feature an electrode wear indicator, a hold function to "save" the current measured value on the display, automatic calibration functions and a self-diagnostic function. The fold-out stand on the back of the devices allows users to keep their hands free and carry out measurements easily and safely. Kit Versions for Mobile Use Instruments marked as "Kit" are supplied in a reinforced measuring case for mobile outdoor use. The case contains the replaceable measuring electrode, the corresponding cable for connecting the electrode to the device, as well as suitable buffer or calibration solutions and instructions. If measurements of different parameters are required using different electrodes, the electrodes can simply be connected together at the upper section and then immersed in the measuring solution. PH220 Version with GLP Functions Storage capacity of 1000 measurement data sets instead of 500 data sets. Measurement and calibration data are stored in compliance with GLP requirements, including date and time stamps. PC communication via optional USB cable. RS232 printer function for printing measurement data. Scope of Delivery PH210 or PH220 handheld meter Robust measuring case Instruction manual and quick reference guide Manufacturer Article Numbers PH210: 3200779537 PH220: 3200779538 Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required.

Thank you for your interest in our smart and individually configurable measuring instruments of the HORIBA LAQUA WQ-300 series. The high-quality digital multi-parameter handheld meters feature a large colour LCD display with LED backlight (7 cm x 5.2 cm), making them ideally suited for field use under a wide range of conditions and in direct daylight. Use our configurator to select the appropriate measuring instrument from the HORIBA WQ-300 series with 1 to 3 measuring channels, the desired measuring parameters (sensor cartridges) and the required cable length according to your individual needs. The sensor cables feature an integrated sensor receptacle and digital module. Additional measuring parameters can also be connected at a later stage using the corresponding sensor cable or carried in the measuring case as supplementary equipment. As with other HORIBA handheld meters, the devices are particularly resistant to shocks, slipping and scratches thanks to their special rubber coating. Operation requires four standard AA batteries with 2500 mAh. For greater flexibility during mobile use, the WQ-300 series can alternatively be powered by a power bank or battery pack via the integrated USB interface. An IP67 certification, which confirms dust-tightness and protection against temporary immersion for up to 30 minutes at a water depth of one metre, completes the professional overall package alongside the ergonomic design and easy operation. HORIBA offers a three-year warranty on the handheld measuring instruments of the LAQUA WQ-300 series. Functions and Features During measurements, users are supported by operating instructions displayed in the form of smiley symbols. These are complemented by an LED status indicator on the sensor to help prevent operating errors and implausible measurement results. The small number of control buttons and the absence of complex, nested menus ensure that the instruments remain easy and safe to operate, even when used intermittently or by different users. Additional Functions Electrode wear indicator Measurement stability indicator on the instrument and sensor Hold function to "save" the current measured value on the display Individual measuring point identification with up to 8 characters Automatic calibration functions Integrated sensor holders Self-diagnostic function GLP functions Fold-out stand for convenient hands-free measurements Transfer of measurement data to a computer or smartphone via USB or WiFi Measuring Case for Mobile Use All handheld meters of the WQ-300 series are supplied in a reinforced measuring case for mobile outdoor use. The case provides space for the measuring instrument, electrodes and cables, as well as up to eight 60 ml bottles of buffer solutions. An integrated holder for buffer solution bottles facilitates calibration. Automatic Sensor Recognition A particular advantage of the WQ-300 series is automatic sensor recognition through sensor cables with integrated digital sensor receptacles. Information about the sensor, calibration data and measurement settings is stored in the digital sensor module and transmitted to the measuring instrument. In addition, all connected sensors can be calibrated simultaneously, as each sensor module independently stores measurement and calibration data and transmits them to the WQ-300 series measuring instrument. Analogue sensors can optionally be connected using the HORIBA BNC sensor adapter. Please contact us for further information. Available Languages German English French Spanish Portuguese Chinese Scope of Delivery WQ-300 series handheld meter in a carrying case Selected digital electrode, if applicable, and the corresponding sensor-specific cable with integrated digital sensor receptacle Instruction manual Manufacturer Article Number WQ-310-K (1 channel): 3200832605 Calibrating the Instrument pH Measurement To obtain accurate results, a two-point calibration must be carried out. The following buffer solutions are recommended: pH 7.00 and 4.01 for acidic samples pH 7.00 and 10.01 for alkaline samples If the expected pH value of the sample is unknown, a three-point calibration using pH 7.00, 4.01 and 10.01 is recommended. It is recommended to begin calibration with pH 7.00. Conductivity Measurement For conductivity measurements, a single-point calibration is sufficient, for example at 1413 µS/cm. For greater accuracy, a multi-point calibration can also be performed. Important Note on the Chloride Sensor Note: If a chloride sensor is selected, it is supplied without chloride ionic strength adjuster and chloride electrode filling solution. These solutions must be purchased separately by the customer. The chloride sensor cannot be used without the required filling solution. Why We Use These Measuring Devices in Water Treatment Precise calcium control is an important element of efficient water treatment, from drinking water purification and process water management to environmental analysis. Elevated calcium concentrations can contribute to scale formation, pipe damage, increased energy consumption and disruptions in chemical processes. For these applications, we offer configurable solutions from the HORIBA LAQUA WQ series in our online shop. Available Measuring Instruments WQ310-K: Single-channel solution for targeted measurements. WQ320-K: Simultaneous measurement of two parameters, such as calcium and conductivity. WQ330-K: Three-channel measurement for complex multi-parameter analyses. Benefits for Water Treatment Reliable measurement data for monitoring and optimising water treatment systems. Digital evaluation, documented measurement results and interfaces for data transfer. Robust design and practical measuring case for mobile on-site use. Flexible combination of calcium measurements with other parameters such as pH, conductivity or redox potential. Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required.

Thank you for your interest in our smart and individually configurable measuring instruments of the HORIBA LAQUA WQ-300 series. The high-quality digital multi-parameter handheld meters feature a large colour LCD display with LED backlight (7 cm x 5.2 cm), making them ideally suited for field use under a wide range of conditions and in direct daylight. Use our configurator to select the appropriate measuring instrument from the HORIBA WQ-300 series with 1 to 3 measuring channels, the desired measuring parameters (sensor cartridges) and the required cable length according to your individual needs. The sensor cables feature an integrated sensor receptacle and digital module. Additional measuring parameters can also be connected at a later stage using the corresponding sensor cable or carried in the measuring case as supplementary equipment. As with other HORIBA handheld meters, the devices are particularly resistant to shocks, slipping and scratches thanks to their special rubber coating. Operation requires four standard AA batteries with 2500 mAh. For greater flexibility during mobile use, the WQ-300 series can alternatively be powered by a power bank or battery pack via the integrated USB interface. An IP67 certification, which confirms dust-tightness and protection against temporary immersion for up to 30 minutes at a water depth of one metre, completes the professional overall package alongside the ergonomic design and easy operation. HORIBA offers a three-year warranty on the handheld measuring instruments of the LAQUA WQ-300 series. Functions and Features During measurements, users are supported by operating instructions displayed in the form of smiley symbols. These are complemented by an LED status indicator on the sensor to help prevent operating errors and implausible measurement results. The small number of control buttons and the absence of complex, nested menus ensure that the instruments remain easy and safe to operate, even when used intermittently or by different users. Additional Functions Electrode wear indicator Measurement stability indicator on the instrument and sensor Hold function to "save" the current measured value on the display Individual measuring point identification with up to 8 characters Automatic calibration functions Integrated sensor holders Self-diagnostic function GLP functions Fold-out stand for convenient hands-free measurements Transfer of measurement data to a computer or smartphone via USB or WiFi Measuring Case for Mobile Use All handheld meters of the WQ-300 series are supplied in a reinforced measuring case for mobile outdoor use. The case provides space for the measuring instrument, electrodes and cables, as well as up to eight 60 ml bottles of buffer solutions. An integrated holder for buffer solution bottles facilitates calibration. Automatic Sensor Recognition A particular advantage of the WQ-300 series is automatic sensor recognition through sensor cables with integrated digital sensor receptacles. Information about the sensor, calibration data and measurement settings is stored in the digital sensor module and transmitted to the measuring instrument. In addition, all connected sensors can be calibrated simultaneously, as each sensor module independently stores measurement and calibration data and transmits them to the WQ-300 series measuring instrument. Analogue sensors can optionally be connected using the HORIBA BNC sensor adapter. Please contact us for further information. Available Languages German English French Spanish Portuguese Chinese Scope of Delivery WQ-300 series handheld meter in a carrying case Selected digital electrode, if applicable, and the corresponding sensor-specific cable with integrated digital sensor receptacle Instruction manual Manufacturer Article Number WQ-320-K (2 channels): 3200832606 Calibrating the Instrument pH Measurement To obtain accurate results, a two-point calibration must be carried out. The following buffer solutions are recommended: pH 7.00 and 4.01 for acidic samples pH 7.00 and 10.01 for alkaline samples If the expected pH value of the sample is unknown, a three-point calibration using pH 7.00, 4.01 and 10.01 is recommended. It is recommended to begin calibration with pH 7.00. Conductivity Measurement For conductivity measurements, a single-point calibration is sufficient, for example at 1413 µS/cm. For greater accuracy, a multi-point calibration can also be performed. Important Note on the Chloride Sensor Note: If a chloride sensor is selected, it is supplied without chloride ionic strength adjuster and chloride electrode filling solution. These solutions must be purchased separately by the customer. The chloride sensor cannot be used without the required filling solution. Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required.

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. Calibrating the instrument: pH measurement To obtain accurate results, a two-point calibration must be carried out. It is recommended that the following solutions be used: pH 7.00 and 4.01 for acidic samples pH 7.00 and 10.01 for alkaline samples Carry out a three-point calibration using pH 7.00, 4.01 and 10.01 if you do not know the expected pH value of the sample. It is recommended that you calibrate using pH 7.00 first. Conductivity measurement For a conductivity measurement, a single-point calibration is sufficient, for example at 1413 μS/cm. For greater accuracy, a multi-point calibration can also be carried out. 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. Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required. 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 As this change is currently being rolled out, mixed deliveries of the current and updated versions may occur during the transition period. Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required. 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.

Carrying case for 7 LAQUAtwin meters Manufacturer article number: 1300077785 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 cleaning solution for removing protein and blood residues on the ion-selective sensors of the LAQUAtwin testers. Why blood? This passage was included due to the calcium animal blood LAQUAtwin tester available on request (calcium ion sensor S051).  Manufacturer article number: 3200774601 (S051) 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.

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.

Horiba LAQUAtwin Fluoride Ion Tester for Mobile Water Analysis Mobile fluoride hand tester with ion-selective electrode for fast and reliable on-site measurements The Horiba LAQUAtwin Fluoride Ion Tester was specifically designed to measure fluoride concentrations in various samples. Using its ion-selective measurement principle, it can detect fluoride in very small sample volumes (from 0.3 ml or 0.1 ml with sampling sheet) and covers a wide measurement range from 0.1 to 990 ppm. This makes the device versatile, suitable for applications from drinking water analysis to industrial processes. Mobile Fluoride Ion Tester for Precise Water and Environmental Analysis Equipped with a fluoride-selective electrode, the tester provides high measurement accuracy of ±2% of the reading. Automatic two-point calibration (1 ppm and 10 ppm) ensures reliable results. Additional features like Auto-Hold and Auto-Stable support accurate reading of stable values in the field. The IP67 waterproof housing protects the device from moisture and dust. A replacement sensor is also available to ensure long-term use of your Horiba LAQUAtwin Fluoride Ion Tester. Why Fluoride Measurement Is Important – Horiba Hand Tester as an Ideal Solution Fluoride content is a critical parameter in drinking water monitoring, environmental analysis, and in medical and industrial applications. Both excessively high and low fluoride concentrations can have health, ecological, or regulatory impacts, making regular monitoring essential. A mobile fluoride hand tester allows rapid on-site analysis without time-consuming laboratory testing. The robust IP67-protected design, replaceable sensor, and easy operation make the Horiba LAQUAtwin Fluoride Tester an ideal solution for routine checks, field measurements, and quality control. Applications of the Horiba Fluoride Pocket Tester Health and Dentistry: Experts use the F-11 to monitor fluoride levels in drinking water, a crucial measure to prevent dental diseases and promote oral health. Water Quality Monitoring: Environmental technicians use the tester to check fluoride concentrations in drinking water, wastewater, and natural bodies of water, ensuring compliance with environmental standards and safety regulations. Industrial Applications: To meet occupational and environmental safety standards, the F-11 allows rapid testing of process and wastewater in industries where fluoride compounds are used or produced. Environmental Analysis: The pocket tester delivers precise data for studying the effects of fluoride on biological systems, particularly where water quality monitoring and regulatory compliance are required. 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 As this change is currently being rolled out, mixed deliveries of the current and updated versions may occur during the transition period. Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required. 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.

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 As this change is currently being rolled out, mixed deliveries of the current and updated versions may occur during the transition period. Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required. 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 As this change is currently being rolled out, mixed deliveries of the current and updated versions may occur during the transition period. Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required.

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 As this change is currently being rolled out, mixed deliveries of the current and updated versions may occur during the transition period. Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required. 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 LAQUAtwin Redox Tester with 1 Calibration Point and Temperature Measurement (ORP-11) Discover the HORIBA Redox Pocket Tester ORP-11: Your reliable solution for accurate redox measurements. The ORP-11 sets new standards in water analysis with its exceptional product quality, Made in Japan, and unique user benefits. This model is a suitable solution for a wide range of users, whether in professional laboratories, industry, aquaculture or hobby gardening. The waterproof design of the ORP-11, the ability to analyze small sample volumes from 0.3 ml (0.05 ml with Sampling Sheet B), easy handling and straightforward sensor replacement are its key features. These characteristics ensure that it can be used for many years. It offers a measurement range of -1000 to 1000 mV and a resolution of 1 mV, providing the flexibility and precision required for specialized redox measurements. Versatile Measurement Methods of the HORIBA ORP-11 The advantages of the ORP-11 in different application areas include: Immersion Ideal for laboratory use, where the tester can be immersed directly into a beaker or measuring cup for measurement. Scoop The specially designed flip-top cover can be used to scoop water samples from rivers or tanks. Drops Perfect for measuring very small liquid volumes, starting from 0.1 ml and even as low as 0.05 ml when using Sampling Sheet B. Wipe By wiping surfaces such as skin with a moistened Sampling Sheet, even the smallest sample quantities can be analyzed. Solid Samples Place moisture-containing food samples directly onto the sensor for analysis. Powders Dry powders can be analyzed by placing them onto the sensor and mixing them with a specified amount of water. HORIBA testers are characterized by their versatility and flexibility for different measurement situations. The ABS epoxy housing and platinum disc sensor ensure that every model in the HORIBA Redox Pocket Tester series is designed to be user-friendly and durable. Choose the HORIBA ORP-11 to experience an exceptional combination of accuracy, reliability and ease of use. This takes your redox measurements to a higher level. Manufacturer's Article Number: 3200965260 LAQUAtwin ORP-11: The World's First Pocket-Sized ORP and Eh Meter Your Mobile Laboratory – for On-Site Use: Ideal for water quality testing in swimming pools, environmental testing and many other applications. HORIBA's unique compact meter integrates the electrode, display and sample container to enable simple, effective on-site testing through direct measurement with just a single drop. Technical Features and Benefits Versatile Measurement: The only pocket-sized ORP meter that can measure not only ORP but also Eh values (voltage measurement relative to the Standard Hydrogen Electrode or SHE). Precision in Every Drop: The replaceable platinum disc sensor enables measurements in samples as small as 0.3 ml (or 0.05 ml with a Sampling Sheet). Wide Measurement Range: With a measurement range of -1000 mV to 1000 mV, the meter ensures accurate readings across a broad spectrum. Easy Automatic One-Point Calibration: The meter automatically recognizes and calibrates using the included 225 mV standard solution. Calibration can be adjusted using another ORP standard solution. Exceptional Accuracy: With an accuracy of +/- 2 mV, the meter delivers precise results every time. Auto Stable & Auto Hold Measurement Modes: To assist users in recording stable readings, the meter displays a smiley indicator and can freeze the measured value. Temperature Compensation and Calibration: The meter displays temperatures up to 50.0 °C and enables temperature compensation and correction through its calibration function. IP67 Rating: Waterproof and dustproof meter with a digital LCD display and backlight. Complete Package for On-the-Go ORP Testing: Each ORP-11 meter is supplied with a 225 mV ORP standard solution (14 ml), a cotton swab for polishing the platinum disc, a pipette and 5 Sampling Sheets. Batteries are no longer included with newly manufactured products from November 2026. Additional Information We would like to inform you about an upcoming product update for the LAQUAtwin pocket meters. To enhance product safety and prevent accidental swallowing of batteries by infants and young children, HORIBA will introduce a new battery cover for all LAQUAtwin pocket meters. Overview of the Product Change Change: Battery cover for increased safety. Reason: Prevention of accidental swallowing of batteries. Production Date: From January 2026 in Japan. As this change is currently being implemented, mixed deliveries of the current and updated versions may occur during the transition period. Note on Scope of Delivery From November 2026, HORIBA products will be delivered without batteries. Existing stock may still contain batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required.

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. Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required. 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. Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required. 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 As this change is currently being rolled out, mixed deliveries of the current and updated versions may occur during the transition period. Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required.

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.

Manufacturer Part Nr. 3200459834

The HORIBA LAQUAtwin Pocket Tester series provides a comprehensive solution for fast and precise measurement of water quality parameters directly in the field. To ensure these measurements remain reliable and accurate, regular monitoring of the sensors and, if necessary, replacement with spare sensors is crucial. These replacement sensors are tailor-made for the HORIBA LAQUAtwin series and cover a wide range of types for various measurements: pH, conductivity, salinity, redox (ORP), as well as ion-selective sensors for sodium, potassium, nitrate, calcium, and fluoride. Each sensor is designed to maximize user-friendliness and accuracy, which HORIBA is renowned for in water quality testing worldwide. HORIBA replacement sensors guarantee users that their devices consistently deliver optimal performance and precise measurements. Advantages of HORIBA Replacement Sensors Easy Replacement: Sensors can be exchanged quickly, allowing uninterrupted measurement. High Accuracy: Replacement sensors ensure precise and reliable results. Wide Measurement Range: Various sensor types are available to capture a broad spectrum of water quality parameters. Durability: Sensors are designed for long service life, even under challenging conditions. Sensor Replacement Instructions Follow these steps to replace the sensor and maintain the longevity and accuracy of your HORIBA LAQUAtwin Pocket Tester: Removing the Sensor Turn off the tester. Lift the sensor tip slightly and pull the sensor away from the device. Completely detach the sensor from the tester. Installing the Sensor Make sure the tester is turned off. Ensure the waterproof gasket is intact and clean. Attach the sensor to the tester so that hook “A” on the back of the device fits into hole “a” on the sensor tip. Make sure the waterproof gasket is not twisted. Important: After replacing the sensor, follow the instructions in the user manual of the respective tester to make the device ready for accurate measurements. This typically includes calibration and, if necessary, conditioning. How can I tell if my sensor is worn out? Check the sensor condition as follows: Perform a 2-point calibration. If an error occurs during calibration, this indicates that the sensor has deteriorated. In this case, the sensor should be replaced. Regular checks and timely replacement of sensors ensure the high quality and reliability of your water quality measurements with HORIBA LAQUAtwin Pocket Testers. 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. Manufacturer Part Nr. 3200459866

HORIBA LAQUAtwin Pocket Tester Sensors – Quick, Accurate, and Reliable The HORIBA LAQUAtwin Pocket Tester series enables fast and precise on-site measurement of water quality parameters. To ensure consistently reliable results, it is essential to check the sensors regularly and replace them when necessary.These replacement sensors are specially designed for the HORIBA LAQUAtwin series and are available in a wide range of variants for different measurements: pH, conductivity, salinity, redox (ORP), and ion-selective sensors for sodium, potassium, nitrate, calcium, and fluoride. Each sensor is engineered for maximum user-friendliness and accuracy—qualities that have made HORIBA a global leader in water quality testing.  Benefits of HORIBA Replacement Sensors: Easy replacement – Simple sensor exchange allows quick resumption of measurements. High accuracy – Ensures precise and reliable measurement results. Wide application range – Different sensors available for various water quality parameters. Durability – Designed for long service life, even under demanding conditions.Sensor Replacement InstructionsRemoving the sensor:  Switch off the tester.  Lift the sensor tip, then slide it slightly away from the device.  Pull the sensor out completely.  Attaching the sensor:  Ensure the tester is switched off.  Check that the waterproof seal is clean and intact.  Press the sensor into the device so that hook "A" on the tester fits into hole "a" on the sensor tongue.  Make sure the seal is not twisted. Important: After replacement, follow the instructions in your tester’s user manual to resume operation. Calibration—and in some cases conditioning—may be required. (Calibration instructions are included with the product.)  FAQ – Checking Sensor WearQ: How can I tell if my sensor is worn out? A: Perform a 2-point calibration. If a calibration error occurs, this indicates sensor deterioration and the sensor should be replaced.Regular inspection and timely replacement of sensors will ensure the long-term accuracy, reliability, and high quality of your HORIBA LAQUAtwin Pocket Tester measurements. Manufacturer Part Nr. 3200459867

Manufacturer Part Nr. 3200459868

HORIBA Nitrate Replacement Sensor (S040) for Pocket Testers NO3-11, NO3-11C and NO3-11SThe HORIBA LAQUAtwin Pocket Tester series allows water quality parameters to be measured quickly and accurately on site. To ensure that these measurements are reliable and accurate, it is very important to check the sensors regularly and replace them with replacement sensors if necessary. These replacement sensors have been specially developed for the HORIBA LAQUAtwin series and offer a wide range of variants for different measurements: pH value, conductivity, salinity, redox (ORP) and ion-selective sensors for sodium, potassium, nitrate, calcium and fluoride. Each of these sensors has been designed with the aim of maximising user-friendliness and accuracy, for which HORIBA is known worldwide in the field of water quality testing. The advantages of HORIBA replacement sensors are: Easy replacement: It is easy to replace the sensors, allowing measurements to be resumed quickly. Highest accuracy: The replacement sensors ensure that the measurement results are precise and reliable.Wide range of measurements: Different types of sensors are available for different water quality parameters.Durability: The sensors are designed to have a long service life even under challenging conditions. Instructions for replacing the sensor: To ensure that your HORIBA LAQUAtwin Pocket Tester is durable and accurate, please follow these steps when replacing the sensor:Remove the sensor Switch off the measuring device. Lift the tip of the sensor. Then slide the sensor slightly away from the measuring device. Remove the sensor completely from the measuring device (by pulling).Attaching the sensor  Switch off the measuring device. Make sure that the water-repellent seal is clean and undamaged. Press the sensor onto the measuring device so that hook ‘A’ on the back of the device fits into hole ‘a’ on the tongue of the sensor.Make sure that the waterproof seal is not twisted. Important:To put the measuring device back into operation for correct measurement, follow the steps in the operating instructions for the corresponding tester after replacement. (Our products include such instructions. In most cases, calibration and, if necessary, conditioning are required.)  Question: How can I check if my sensor is worn out?  Answer: By checking the condition of the sensor as follows:  Perform a 2-point calibration to check the sensor condition. If a calibration error occurs, this suggests that the sensor is deteriorating. The sensor should therefore be replaced.  Regular checks and timely replacement of sensors ensure the high quality and reliability of your water quality measurements using the HORIBA LAQUAtwin Pocket Testers.  Manufacturer item number: 3200459870