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

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

The original solution should be used as it is. For general use as standard solution sets, 101-S (100-4.7.9 and #310 internal solution) are also available. Manufacturer article number:3200043639 (100-2)

The original solution should be used as it is. For general use as standard solution sets, 101-S (100-4.7.9 and #310 internal solution) are also available. Manufacturer article number:3200043637 (100-7)

The original solution should be used as it is. For general use as standard solution sets, 101-S (100-4.7.9 and #310 internal solution) are also available. Manufacturer article number:3200043636 (100-9)

Horiba pH6.86 (500 ml), pH4 (250 ml) and pH9.18 (250 ml) buffer solution (101-S) Reference electrode Internal solution #300 (250 ml) / dropper Use undiluted.The set contains standard and internal solutions, as shown. Manufacturer article number:3200043642 (101-S)

The Milwaukee MW100 PRO pH meter features manual calibration and fast operation in a rugged design.It is ideal for users in pools, and hydroponic applications. This meter is also ideal for educators that want their students to learn the basics of pH meter calibration before going fully automatic.Design featuresFast easy to read results with large digital LCD readoutAccurate to ±0.2 pH with a 0.0-14.0 pH rangeLightweight, ergonomic and portableEasy measurement: just place the probe in the sample, gently stir and wait for the reading to stabilizeSimple manual two-point calibration for increased accuracyGel-filled, double junction lab grade pH electrode for low maintenance and high performance with a screw on cap to ensure proper storage (SE220 probe included)3 feet probe cables for extra flexibility when testingLow battery indicatorBattery life of approx. 300 hours of continuous use (battery included)

It performs pH measurements with a resolution of 0.01 pH and with manual temperature compensation.The MW101 PRO comes complete with an SE220 pH electrode, a 20 ml bag of pH 7.01 calibration solution, a calibration screwdriver, a 9 V battery and instructions.Design featuresFast, easy-to-read results with large digital LCD display Accuracy of ±0.02 pH with a pH range of 0.00-14.00Lightweight and portable Easy to measure: simply insert the probe into the sample, stir gently and wait for the reading to stabiliseEasy manual two-point calibration for increased accuracy Laboratory-grade gel-filled pH electrode with double connector for low maintenance and high performance, with screw cap for proper storage (SE220 probe included) 3-foot probe cable for added testing flexibility Automatic shut-off and low power requirements for approximately 300 hours of continuous operation. (Battery included)

It is a microprocessor-controlled pH/temperature meter with extended measuring range (-2.00 to 16.00 pH), automatic temperature compensation, automatic calibration in 2 points and an accuracy of ± 0.02 pH.Design featuresFast, easy-to-read results with large digital LCD displayExtreme accuracy to ±0.02 pH and extended range (-2.00 pH to 16.00 pH)Lightweight and portableEasy measurement: simply insert the probe into the sample, stir gently and wait for the reading to stabiliseSimple push-button, automatic two-point calibration for increased accuracyDouble-junction, laboratory-grade gel-filled pH electrode for low maintenance and high performance, with screw cap for proper storageRobust stainless steel temperature probe3-foot probe cable for added testing flexibilityAutomatic shut-off and low power consumption for approx. 300 hours of continuous operation (battery included)

This Meter is a specialist food pH meter and probe combination specifically designed for the pH analysis of semi-solid foods such as processed meats, soft cheeses, soups, sauces, and sushi rice.AccuracyWith two point calibration, the meter can be quickly calibrated to a higher accuracy compared with one point calibration.The MW102 meter has accuracy to ± 0.02 pH. 5x more accurate than some alternative meters.The meter comes with both a pH probe and temperature probe allowing the meter to automatically adjust the pH reading for the effect of temperature.The temperature probe can also be used as a very accurate thermometer.Special features:- Fast easy to read results with large digital LCD readout- Extreme accuracy to ±0.02 pH and extended range (-2.00 pH to 16.00 pH)- Lightweight and portable- Easy measurement: just place the probe in the sample, gently stir and wait for the reading to stabilize- Simple push button, automatic two-point calibration for increased accuracy- Food grade electrode with a rugged, easy-to-clean, PVDF body, a conical tip for use with semi solids with a screw on cap to ensure proper storage- Rugged stainless temperature probe- 3 feet probe cables for extra flexibility when testing- Auto shut off and low power demand with approx. 300 hours of continuous use (battery included)

The MW105 MAX meter combines all the features of a benchtop meter in an IP67-rated portable meter.The units are equipped with a range of new diagnostic functions that improve the reliability of pH measurement:Waterproof IP67 housingExtended pH range: -2.00 to 20.00 pHUp to 3-point automatic pH calibration, 7 standard calibration buffers (pH 1.68, 4.01, 6.86, 7.01, 9.18, 10.01 and 12.45)alphanumeric LCD display for user-friendly, intuitive information, warning and error messagesautomatic switch-off function to conserve battery powerinternal clock and date for monitoring various time-dependent functions (calibration timestamp, calibration timeout)Special GLP button

The MW106 MAX meter combines all the features of a benchtop meter in an IP67 portable meter.The meter is equipped with a range of new diagnostic functions that improve the reliability of pH measurement.Hand carrying caseEach meter is supplied in a hard carrying case, ideal for on-site measurements.

This 3-in-1 low range combination meter allows you to measure pH, EC (conductivity) and TDS with a single meter and probe.It comes complete with the SE600 combined pH/EC/TDS probe, a 20 ml bag of pH 7.01 buffer solution, a 20 ml bag of 1413 µS/cm calibration solution, a 20 ml bag of 1382 ppm calibration solution, a 9 V battery and instructions.

This 3-in-1 combination meter allows you to measure pH, EC high range (conductivity) and TDS high range with a single meter and probe.It comes complete with the SE600 combined pH/EC/TDS probe, a 20 ml bag of pH 7.01 buffer solution, a 20 ml bag of 1413 µS/cm calibration solution, a 20 ml bag of 1500 ppm calibration solution, a 9 V battery and instructions.

Das Milwaukee MW803 ist ein kompaktes, wasserdichtes All-in-One-Messgerät für pH, Leitfähigkeit, TDS und Temperatur. Speziell für Messungen im niedrigen Leitfähigkeitsbereich entwickelt, eignet es sich optimal für Hydroponik, Trinkwasseranalysen und Anwendungen mit geringer Salzkonzentration. Dank automatischer Temperaturkompensation, austauschbarer Sonde und einfacher Handhabung bietet der MW803 höchste Zuverlässigkeit auch im mobilen Einsatz.

Der Milwaukee MW804 kombiniert pH-, Leitfähigkeits-, TDS- und Temperaturmessungen in einem robusten, wasserdichten Gerät. Mit seinem hohen Messbereich ist er besonders für Anwendungen in der Landwirtschaft,  oder Aquakultur geeignet. Die automatische Temperaturkompensation und die austauschbare Sonde gewährleisten präzise und langlebige Messungen – auch bei hohen Salz- oder Mineralgehalten.

This MW805 MAX pH/EC/TDS/Temp. 4-in-1 combo meter allows you to measure pH, EC (conductivity), TDS and Temp. with a single meter and one single probe.DESIGN FEATURESpH, conductivity / nutrient EC, TDS (ppt) with automatic temperature compensationSelectable TDS factors from .40 to 0.8; defaulet value 0.50Stability indicator prompting the user when the readings stabilizeDedicated GLP key to store and recall data on system statusA replaceable, Amplified Combination pH/EC/TDS/Temp probe with a single 1 meter cable for easy use (MA852D/1 probe included)A cloth junction on the pH sensor to reduce contamination when measuring fertilizer solutions. Gel filled for long lasting measurmentsA light weight and portable form factor at just 260g with battery and just over 7,62cm wideA large easy to read displayFactory calibration for Temperature and simple, highly accurate, single cell automatic, one point calibration for EC and an automatic up to 5 point calibration for pHIP 67 rated rugged case built for field or lab applicationsSpecialized design for hydroponic, aquaponic, and greenhouse growers

This High Range MW806 MAX pH/EC/TDS/Temp. 4-in-1 combo meter allows you to measure pH, EC (conductivity), TDS and Temp. with a single meter and one single probe.DESIGN FEATURESpH, conductivity / nutrient EC, TDS (ppt) with automatic temperature compensationSelectable TDS factors from 0.40 to 0.8; defaulet value 0.50Stability indicator prompting the user when the readings stabilizeDedicated GLP key to store and recall data on system statusA replaceable, Amplified Combination pH/EC/TDS/Temp probe with a single 1 meter cable for easy use (MA852 probe included)A cloth junction on the pH sensor to reduce contamination when measuring fertilizer solutionsGel filled for long lasting measurmentsA light weight and portable form factor at just 260g with battery and just over 7,62cm wideA large easy to read displayFactory calibration for Temperature and simple, highly accurate, single cell automatic, one point calibration for EC and an automatic up to 5 point calibration for pHIP 67 rated rugged case built for field or lab applicationsSpecialized design for hydroponic, aquaponic, and greenhouse growers

Frequently asked questions Why do I need a pH tester in the first place? It’s used to measure whether the water is more acidic or more alkaline. Is the device suitable for beginners? Yes. Simply switch it on, dip it in the water and read the result straight away. How quickly do I get a result? You can see the current pH value on the display in a few seconds. How accurate is a pH tester in everyday use? The readings are reliable and help you keep a close eye on the quality of the water. Can I use the device for different types of water? Yes, for example for drinking water, aquariums or watering plants.

Frequently asked questions Why do I need a pH tester in the first place? It’s used to measure whether the water is more acidic or more alkaline. Is the device suitable for beginners? Yes. Simply switch it on, dip it in the water and read the result straight away. How quickly do I get a result? You can see the current pH value on the display in a few seconds. How accurate is a pH tester in everyday use? The readings are reliable and help you keep a close eye on the quality of the water. Can I use the device for different types of water? Yes, for example for drinking water, aquariums or watering plants.

Das Milwaukee PH55 ist ein wasserdichtes, kompaktes Messgerät für pH und Temperatur. Mit automatischer Temperaturkompensation und einer austauschbaren Sonde liefert es schnelle und präzise Messergebnisse im Bereich 0,00–14,00 pH. Dank seiner robusten Bauweise ist es ideal für den Einsatz in Aquaristik, Hydroponik oder Umweltkontrolle. Die einfache Zwei-Punkt-Kalibrierung sorgt für zuverlässige Ergebnisse auch im professionellen Umfeld.

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.

Frequently asked questions Why do I need a pH tester in the first place? It’s used to measure whether the water is more acidic or more alkaline. Is the device suitable for beginners? Yes. Simply switch it on, dip it in the water and read the result straight away. How quickly do I get a result? You can see the current pH value on the display in a few seconds. How accurate is a pH tester in everyday use? The readings are reliable and help you keep a close eye on the quality of the water. Can I use the device for different types of water? Yes, for example for drinking water, aquariums or watering plants.