You have probably heard or seen the term pH value at least once before. You may also remember experiments in school where litmus paper was used to test whether a solution was acidic or alkaline.
The determination of the pH value is important to determine an important characteristic of a solution. Thus, pH is just a unit that represents a characteristic of a solution, just as the meter is a unit of length. Thus, pH, which is commonly used for water measurements, is a measure of acidity and alkalinity, or the alkalis and bases present in a particular solution.
So what kind of characteristic is represented by pH? The pH indicates how acidic or alkaline a solution is, such as your lemon juice or soap suds, and is generally expressed on a numerical scale of 0-14. Pure, neutral water has a pH of 7. Any solution with a pH below 7 is acidic, and if the pH is above 7, it is alkaline. The numbers on the scale increase with increasing alkalinity, while the numbers on the scale decrease with increasing acidity.
An exemplary measurement of the pH value with a pocket tester can be found in the video link below: Pocket Tester Shop
HORIBA LAQUAtwin pH Meter
Das Milwaukee PH56 bietet präzise pH- und Temperaturmessungen mit hoher Auflösung (0,01 pH). Es ist wasserdicht nach IP65, mit automatischer Temperaturkompensation ausgestattet und verfügt über eine austauschbare Sonde. Besonders praktisch für Anwender, die Genauigkeit und Langlebigkeit benötigen – sei es in Laboren, der Lebensmittelindustrie oder im Outdoor-Bereich.
Der Milwaukee PH58 ist ein vielseitiges, wasserdichtes Messgerät für pH, Redox (ORP) und Temperatur. Mit automatischer Temperaturkompensation und austauschbarer Sonde liefert er zuverlässige Ergebnisse in verschiedenen Anwendungen – von Aquakultur über Laboranalysen bis hin zu Umweltprüfungen. Die robuste Bauweise und die einfache Kalibrierung machen den PH58 zum idealen Begleiter für präzise Messungen im Alltag und im professionellen Bereich.
Milwaukee PH600 Digital pH-Pen – präziser pH-Testkomfort für unterwegs. Misst im Bereich von 0,0–14,0 pH mit ± 0,1 Genauigkeit, ideal für Aquarien, Hydroponik und Labor. Einfache 1-Punkt-Kalibrierung, klare LCD-Anzeige. Kompakt, handlich und zuverlässig – für schnelle, genaue pH-Kontrollen jederzeit.
Original spare part from HORIBA – guaranteed to fit the U-50 series perfectlyThe Horiba Reference Electrode Tip 7210 is a high-quality replacement part designed specifically for Horiba's U50 series of multiparameter measuring devices. It ensures a precise and stable reference voltage, which is essential for reliable measurement results in demanding environmental and water analyses. The electrode tip is easy to replace and helps to extend the service life of the entire system. Thanks to its robust design, it is ideal for use in harsh field conditions. With the 7210 reference electrode tip, your U50 measuring device will always be ready for use and perform at its best. Manufacturer article number: 3200043582
The XS REVIO is a professional portable multi-parameter meter that can be powered in three different ways (battery, PC, AC adapter). It has an illuminated color graphic display for excellent data visualization in all lighting conditions, also thanks to the possibility of automatically and manually adjusting the contrast and illumination of the display. Measurement of pH, mV, ORP, ISE, conductivity, TDS, salinity, resistivity, dissolved oxygen and temperature. Online help with setup and calibration allows easy and immediate use of the instrument. Simultaneous display of multiple parameters that can be selected by the operator. Automatic pH calibration with USA and NIST buffers up to 5 points and 5 user defined points. Automatic ORP calibration 1 point. Automatic conductivity calibration with up to 4 points and 1 user defined point. Adjustable reference temperature and selectable cell constant. Automatic O2 calibration up to two points (0% - 100%). Display of calibrated points with symbols. GLP functions: Date and time, display of calibration data and calibration period setting.Manual and automatic data logger with the possibility of downloading the data to a PC via micro USB.Display of measurement stability and possibility to select 3 stability levels. All processes are constantly monitored and signaled to the operator by the colored LED above the display and by self-diagnostic messages. The following pre-assembled case variants are available for selection: Variant 1: with digital electrode 201 T DHS, cell 2301T and polarographic oxygen sensor, built-in temperature sensor and 3 m fixed cable, in compact case (manufacturer's number: 50110952). Variant 2: with pH electrode 201T/3MT , 2301T cell (conductivity), polarographic oxygen sensor, built-in temperature sensor and 3 m fixed cable each, in compact case (manufacturer's number: 50110912)Variant 3: complete with pH electrode 201T/3MT and polarographic sensor DO7/3MT, both with built-in temperature sensor and fixed cable 3m, in compact case (manufacturer number: 50110922) Variant 4: complete with conductivity cell 2301T/3MT and polarographic sensor DO7/3MT, both with built-in temperature sensor and fixed cable 3m. Additionally S7-BNC cable and NT55 temperature sensor, each 3m cable, in compact case (manufacturer number: 50110942) Variant 5: with S7-BNC cable and NT55 temperature sensor, both 3m cable, in compact case (manufacturer number: 50110932)
The XS REVIO is a professional portable multi-parameter meter that can be powered in three different ways (battery, PC, AC adapter). It has an illuminated color graphic display for excellent data visualization in all lighting conditions, also thanks to the possibility of automatically and manually adjusting the contrast and illumination of the display. Measurement of pH, mV, ORP, ISE, conductivity, TDS, salinity, resistivity, dissolved oxygen and temperature. Online help with setup and calibration allows easy and immediate use of the instrument. Simultaneous display of multiple parameters that can be selected by the operator. Automatic pH calibration with USA and NIST buffers up to 5 points and 5 user defined points. Automatic ORP calibration 1 point. Automatic conductivity calibration with up to 4 points and 1 user defined point. Adjustable reference temperature and selectable cell constant. Automatic O2 calibration up to two points (0% - 100%). Display of calibrated points with symbols. GLP functions: Date and time, display of calibration data and calibration period setting.Manual and automatic data logger with the possibility of downloading the data to a PC via micro USB.Display of measurement stability and possibility to select 3 stability levels. All processes are constantly monitored and signaled to the operator by the colored LED above the display and by self-diagnostic messages. The following pre-assembled case variants are available for selection: Variant 1: with digital electrode 201 T DHS, cell 2301T and polarographic oxygen sensor, built-in temperature sensor and 3 m fixed cable, in compact case (manufacturer's number: 50110952). Variant 2: with pH electrode 201T/3MT , 2301T cell (conductivity), polarographic oxygen sensor, built-in temperature sensor and 3 m fixed cable each, in compact case (manufacturer's number: 50110912)Variant 3: complete with pH electrode 201T/3MT and polarographic sensor DO7/3MT, both with built-in temperature sensor and fixed cable 3m, in compact case (manufacturer number: 50110922) Variant 4: complete with conductivity cell 2301T/3MT and polarographic sensor DO7/3MT, both with built-in temperature sensor and fixed cable 3m. Additionally S7-BNC cable and NT55 temperature sensor, each 3m cable, in compact case (manufacturer number: 50110942) Variant 5: with S7-BNC cable and NT55 temperature sensor, both 3m cable, in compact case (manufacturer number: 50110932)
The XS REVIO is a professional portable multi-parameter meter that can be powered in three different ways (battery, PC, AC adapter). It has an illuminated color graphic display for excellent data visualization in all lighting conditions, also thanks to the possibility of automatically and manually adjusting the contrast and illumination of the display. Measurement of pH, mV, ORP, ISE, conductivity, TDS, salinity, resistivity, dissolved oxygen and temperature. Online help with setup and calibration allows easy and immediate use of the instrument. Simultaneous display of multiple parameters that can be selected by the operator. Automatic pH calibration with USA and NIST buffers up to 5 points and 5 user defined points. Automatic ORP calibration 1 point. Automatic conductivity calibration with up to 4 points and 1 user defined point. Adjustable reference temperature and selectable cell constant. Automatic O2 calibration up to two points (0% - 100%). Display of calibrated points with symbols. GLP functions: Date and time, display of calibration data and calibration period setting.Manual and automatic data logger with the possibility of downloading the data to a PC via micro USB.Display of measurement stability and possibility to select 3 stability levels. All processes are constantly monitored and signaled to the operator by the colored LED above the display and by self-diagnostic messages. The following pre-assembled case variants are available for selection: Variant 1: with digital electrode 201 T DHS, cell 2301T and polarographic oxygen sensor, built-in temperature sensor and 3 m fixed cable, in compact case (manufacturer's number: 50110952). Variant 2: with pH electrode 201T/3MT , 2301T cell (conductivity), polarographic oxygen sensor, built-in temperature sensor and 3 m fixed cable each, in compact case (manufacturer's number: 50110912)Variant 3: complete with pH electrode 201T/3MT and polarographic sensor DO7/3MT, both with built-in temperature sensor and fixed cable 3m, in compact case (manufacturer number: 50110922) Variant 4: complete with conductivity cell 2301T/3MT and polarographic sensor DO7/3MT, both with built-in temperature sensor and fixed cable 3m. Additionally S7-BNC cable and NT55 temperature sensor, each 3m cable, in compact case (manufacturer number: 50110942) Variant 5: with S7-BNC cable and NT55 temperature sensor, both 3m cable, in compact case (manufacturer number: 50110932)
The XS REVIO is a professional portable multi-parameter meter that can be powered in three different ways (battery, PC, AC adapter). It has an illuminated color graphic display for excellent data visualization in all lighting conditions, also thanks to the possibility of automatically and manually adjusting the contrast and illumination of the display. Measurement of pH, mV, ORP, ISE, conductivity, TDS, salinity, resistivity, dissolved oxygen and temperature. Online help with setup and calibration allows easy and immediate use of the instrument. Simultaneous display of multiple parameters that can be selected by the operator. Automatic pH calibration with USA and NIST buffers up to 5 points and 5 user defined points. Automatic ORP calibration 1 point. Automatic conductivity calibration with up to 4 points and 1 user defined point. Adjustable reference temperature and selectable cell constant. Automatic O2 calibration up to two points (0% - 100%). Display of calibrated points with symbols. GLP functions: Date and time, display of calibration data and calibration period setting.Manual and automatic data logger with the possibility of downloading the data to a PC via micro USB.Display of measurement stability and possibility to select 3 stability levels. All processes are constantly monitored and signaled to the operator by the colored LED above the display and by self-diagnostic messages. The following pre-assembled case variants are available for selection: Variant 1: with digital electrode 201 T DHS, cell 2301T and polarographic oxygen sensor, built-in temperature sensor and 3 m fixed cable, in compact case (manufacturer's number: 50110952). Variant 2: with pH electrode 201T/3MT , 2301T cell (conductivity), polarographic oxygen sensor, built-in temperature sensor and 3 m fixed cable each, in compact case (manufacturer's number: 50110912)Variant 3: complete with pH electrode 201T/3MT and polarographic sensor DO7/3MT, both with built-in temperature sensor and fixed cable 3m, in compact case (manufacturer number: 50110922) Variant 4: complete with conductivity cell 2301T/3MT and polarographic sensor DO7/3MT, both with built-in temperature sensor and fixed cable 3m. Additionally S7-BNC cable and NT55 temperature sensor, each 3m cable, in compact case (manufacturer number: 50110942) Variant 5: with S7-BNC cable and NT55 temperature sensor, both 3m cable, in compact case (manufacturer number: 50110932)
The XS REVIO is a professional portable multi-parameter meter that can be powered in three different ways (battery, PC, AC adapter). It has an illuminated color graphic display for excellent data visualization in all lighting conditions, also thanks to the possibility of automatically and manually adjusting the contrast and illumination of the display. Measurement of pH, mV, ORP, ISE, conductivity, TDS, salinity, resistivity, dissolved oxygen and temperature. Online help with setup and calibration allows easy and immediate use of the instrument. Simultaneous display of multiple parameters that can be selected by the operator. Automatic pH calibration with USA and NIST buffers up to 5 points and 5 user defined points. Automatic ORP calibration 1 point. Automatic conductivity calibration with up to 4 points and 1 user defined point. Adjustable reference temperature and selectable cell constant. Automatic O2 calibration up to two points (0% - 100%). Display of calibrated points with symbols. GLP functions: Date and time, display of calibration data and calibration period setting.Manual and automatic data logger with the possibility of downloading the data to a PC via micro USB.Display of measurement stability and possibility to select 3 stability levels. All processes are constantly monitored and signaled to the operator by the colored LED above the display and by self-diagnostic messages. The following pre-assembled case variants are available for selection: Variant 1: with digital electrode 201 T DHS, cell 2301T and polarographic oxygen sensor, built-in temperature sensor and 3 m fixed cable, in compact case (manufacturer's number: 50110952). Variant 2: with pH electrode 201T/3MT , 2301T cell (conductivity), polarographic oxygen sensor, built-in temperature sensor and 3 m fixed cable each, in compact case (manufacturer's number: 50110912)Variant 3: complete with pH electrode 201T/3MT and polarographic sensor DO7/3MT, both with built-in temperature sensor and fixed cable 3m, in compact case (manufacturer number: 50110922) Variant 4: complete with conductivity cell 2301T/3MT and polarographic sensor DO7/3MT, both with built-in temperature sensor and fixed cable 3m. Additionally S7-BNC cable and NT55 temperature sensor, each 3m cable, in compact case (manufacturer number: 50110942) Variant 5: with S7-BNC cable and NT55 temperature sensor, both 3m cable, in compact case (manufacturer number: 50110932)
The high quality XS Instruments portable multi-parameter meters of the Vio 7 and Vio 70 series with innovative high-resolution colour display are suitable for working in all conditions and offer easy handling through an integrated user-friendly operator guide in the form of the set-up and calibration mode. This allows the user to operate the instruments easily and intuitively. The XS Instruments meters feature automatic pH calibration with USA and NIST buffers with up to three points for pH and one point for ORP. The user is supported by intuitive symbols on the backlit screen, including display of the measurement stability (adjustable) and any errors. Another plus point is that the multi-parameter meter is supplied in a professional measuring case, which contains the selected measuring electrode, as well as the appropriate buffer solutions and instructions. Complementary advantages of the 70 Vio version: GLP functions: Date and time, recall of calibration data and "Calibration due" function Integrated data logger for up to 1000 data, automatic and manual PC connection via USB for evaluation of measurement data (Micro-USB on the instrument side) via Data Link+ software Automatic brightness control of the display (prolongs battery life) Only 6 keys for easy control of all functions of the unit 230V power supply unit Manufacturer article number: 50119012
IP Protection: IP67 With exchangeable combined probe Manufacturer article number: 50014253
Dear customers, our handy pocket tester analysis case protects your handheld tester safely and also offers you space for the required calibration and buffer solutions. The 25ml sachet or 70ml bottle solutions matching the tester can be accommodated in the foam blank. Your analysis case consists of the following components: 1x pocket tester 1x pH 4.01 buffer solution (25ml bag or 70ml bottle) 1x pH 7.00 buffer solution (25ml bag or 70ml bottle) 1x conductivity calibration solution EC 1413 µS/CM (25ml bag or 70ml bottle) 1x storage solution (25ml bag) 2x batteries 1x lanyard for the pocket tester 1x pack of tissues You can also purchase the case separately to safely store your existing testers and always have the appropriate calibration and buffer solutions on site in the case. IP protection class: IP67
IP Protection: IP67 With exchangeable combined probe Manufacturer article number: 50014263
Dear customers, our handy pocket tester analysis case protects your handheld tester safely and also offers you space for the required calibration and buffer solutions. The 25ml sachet or 70ml bottle solutions matching the tester can be accommodated in the foam blank. Your analysis case consists of the following components: 1x pocket tester 1x pH 4.01 buffer solution (25ml sachet) 1x pH 7.00 buffer solution (25ml sachet or 70ml bottle) 1x conductivity calibration solution EC 1413 µS/CM (25ml sachet or 70ml bottle) 1x 475mV ORP solution (70ml bottle) 1x storage solution (25ml sachet) 2x batteries 1x lanyard for the pocket tester 1x pack of tissues You can also purchase the case separately to safely store your existing testers and always have the appropriate calibration and buffer solutions on site in the case. IP protection class: IP67
IP Protection: IP67 With exchangeable combined probe Manufacturer article number: 50014293
Our The XS Instruments PC 7 Vio and 70 Vio handheld pH, millivolt, oxidation-reduction potential, conductivity, dissolved solids and temperature multiparameter meters with innovative high-resolution colour display are suitable for working in all conditions and offer you an integrated user-friendly guide in the form of the set-up and calibration mode. This allows for easy and intuitive use of the instrument by the user at any time, no matter how much experience the user has in handling the equipment. The PC 7 Vio and the PC 70 Vio, has an automatic pH calibration with USA and NIST buffers with up to three points for pH and one point for ORP. For the calibration of the conductivity electrode, you have up to five fixed points, as well as an individual calibration point. You are supported by intuitive symbols on the backlit screen, including display of the measurement stability (adjustable) and any errors. Another advantage is that you receive the multi-parameter measuring device in our professional measuring case, which contains the selected measuring electrodes, as well as our respective buffer solutions and the instructions. Complementary advantages of the 70 Vio version:GLP functions: Date and time, recall of calibration data and "Calibration due" function Integrated data logger for up to 1000 data, automatic and manual PC connection via USB for evaluation of measurement data (Micro-USB on the instrument side) via Data Link+ software Automatic brightness control of the display (prolongs battery life) Only 6 keys for easy control of all functions of the unit 230V power supply unit Manufacturer article number: 50110712
Our The XS Instruments PC 7 Vio and 70 Vio handheld pH, millivolt, oxidation-reduction potential, conductivity, dissolved solids and temperature multiparameter meters with innovative high-resolution colour display are suitable for working in all conditions and offer you an integrated user-friendly guide in the form of the set-up and calibration mode. This allows for easy and intuitive use of the instrument by the user at any time, no matter how much experience the user has in handling the equipment. The PC 7 Vio and the PC 70 Vio, has an automatic pH calibration with USA and NIST buffers with up to three points for pH and one point for ORP. For the calibration of the conductivity electrode, you have up to five fixed points, as well as an individual calibration point. You are supported by intuitive symbols on the backlit screen, including display of the measurement stability (adjustable) and any errors. Another advantage is that you receive the multi-parameter measuring device in our professional measuring case, which contains the selected measuring electrodes, as well as our respective buffer solutions and the instructions. Complementary advantages of the 70 Vio version:GLP functions: Date and time, recall of calibration data and "Calibration due" function Integrated data logger for up to 1000 data, automatic and manual PC connection via USB for evaluation of measurement data (Micro-USB on the instrument side) via Data Link+ software Automatic brightness control of the display (prolongs battery life) Only 6 keys for easy control of all functions of the unit 230V power supply unit Manufacturer article number: 50110812
IP Protection: IP67 Manufacturer article number: 50014003
Dear customers, our handy pocket tester analysis case protects your handheld tester safely and also offers you space for the required calibration and buffer solutions. The 25ml sachet or 70ml bottle solutions matching the tester can be accommodated in the foam blank. Your analysis case consists of the following components: 1x pocket tester 1x pH 4.01 buffer solution (25ml bag or 70ml bottle) 1x pH 7.00 buffer solution (25ml bag or 70ml bottle) 1x storage solution (25ml bag or 70ml bottle) 2x batteries 1x lanyard for the pocket tester 1x pack of tissues You can also purchase the case separately to safely store your existing testers and always have the appropriate calibration and buffer solutions on site in the case. IP protection class: IP67
IP Protection: IP67Manufacturer article number: 50014013
This high-precision pH meter delivers measurements with a resolution of 0.01 pH. Equipped with a replaceable electrode, temperature sensor and open measuring chambers, it is particularly versatile. The large, three-colour LCD display shows not only the measured values, but also the calibration buffers used and the stability of the measurement. Calibration is conveniently performed at the touch of a button. In addition, you can read the mV value for diagnosing the pH electrode. Other practical functions include temperature measurement, automatic temperature compensation (0–60 °C), automatic switch-off and self-diagnostic messages in the event of low battery power or calibration errors. The device is ideal for laboratory, industrial or mobile use. IP protection class: IP67 With replaceable probeManufacturer item number: 50014053
Specially developed for applications in the food industry: this portable pH meter operates with a high-resolution accuracy of 0.01 pH. The replaceable electrode with a robust polymer tip, an integrated temperature sensor and open measuring chambers make it particularly reliable and flexible in use. The wide, three-colour LCD display provides clear information on calibration buffers, measurement stability and temperature. Calibration is quick and easy at the touch of a button. mV values can also be read for electrode diagnosis. Additional convenience is provided by automatic temperature compensation (0–60 °C), automatic switch-off and self-diagnostic messages in the event of low battery or calibration errors. A robust device that perfectly combines precision and user-friendliness. IP protection class: IP67 With replaceable probe Manufacturer item number: 50014103
Dear customers, our handy pocket tester analysis case protects your handheld tester safely and also offers you space for the required calibration and buffer solutions. The 25ml sachet or 70ml bottle solutions matching the tester can be accommodated in the foam blank. Your analysis case consists of the following components: 1x pocket tester 1x pH 4.01 buffer solution (25ml bag or 70ml bottle) 1x pH 7.00 buffer solution (25ml bag or 70ml bottle) 1x storage solution (25ml bag or 70ml bottle) 2x batteries 1x lanyard for the pocket tester 1x pack of tissues You can also purchase the case separately to safely store your existing testers and always have the appropriate calibration and buffer solutions on site in the case. IP protection class: IP67
This waterproof pH handheld meter with IP67 protection class impresses with maximum accuracy up to 0.01 pH. Equipped with a polymer-coated, replaceable electrode, open measuring range and integrated temperature sensor, it is ideal for measurements in food production. The large 3-colour display provides clear information about calibration buffers, temperature and the stability of the results. Calibration is conveniently performed at three points with five selectable US buffer values. In addition, an mV display allows quick checking of the electrode status. Thanks to automatic temperature compensation in the range from 0 to 60 °C, auto power-off function and self-diagnostic messages (battery status, calibration error), the device offers maximum safety and ease of use – wherever precise and reliable measurements are required. IP protection class: IP67 With interchangeable probe Manufacturer item number: 50014113