pH Meters

pH meters, pH testers, and pH electrodes are essential tools for accurately measuring the acidity or alkalinity of various samples in outdoor and laboratory settings. These devices are vital for Scientists, researchers, and professionals who require precise pH readings. Complementing this lineup, chlorine meters, especially digital chlorine meters, offer a specialized function for testing chlorine levels in water, ensuring safety and compliance with health standards. The key benefits of using these instruments include their portability, ease of use, and the ability to obtain immediate, accurate readings in various environments. Digital models provide clear, easy-to-read displays, making data collection more efficient and reliable. Together, these tools support a wide array of Scientific and environmental studies, contributing significantly to water quality monitoring and research efforts.

Also available at Thomas Scientific are our water quality test kits and water quality test strips.

pH Meters

Products (201)

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  • ISE500 Benchtop pH/ISE Meters

    labForce® (powered by Thomas Scientific)

    The labForce® ISE500 Benchtop pH/ISE Meter features automatic calibration, automatic temperature compensation, data storage, timing measurement, clock display, RS-232 output, function setting and self-diagnose. It has three measuring modes for your specific measuring needs: stable measurement...

  • PC300 Benchtop pH/Conductivity Meters

    labForce® (powered by Thomas Scientific)

    The labForce® PC300 Benchtop pH/Conductivity Meter features automatic calibration, automatic temperature compensation, data storage, timing measurement, clock display, RS-232 output, function setting and self-diagnose. It has three measuring modes for your specific measuring needs: stable...

  • DO700 Benchtop pH/DO Meters

    labForce® (powered by Thomas Scientific)

    The labForce® DO700 Benchtop pH/DO Meter features automatic calibration, automatic temperature compensation, data storage, timing measurement, clock display, RS-232 output, function setting and self-diagnose. It has three measuring modes for your specific measuring needs: stable measurement...

  • FiveEasy™ pH/mV Meters

    The well-priced pH/mV and conductivity FiveEasy and FiveEasy Plus benchtop meters are the perfect choice for a wide range of laboratory applications. Time is an ever more valuable asset. Thanks to the Five's intuitive operation, sleek design and simple data export functions, you can maximize...

  • Electrodes and Accessories for Inolab Benchtop pH Meters

    Electrodes 4258A53 electrode allows ORP measurements to be performed with all WTW pH/mV meters. Requires 4258A57 cable for use with Inolab Meters.

  • Orion™ Star A and Versa Star™ Accessories

    Get better testing through better design with the Thermo Scientific™ Orion™ Star A and Versa Star™  Electrode Holder. The Orion Star A and Versa Star electrode holder head has identifiable slots and offers the following benefits: Adjustable probe heights reduce the amount of...

  • Star A121 pH Portable Meter

    Thermo Scientific Orion

    Thermo Scientific Orion Star A121 pH Portable Meters combine simplicity with accuracy. A large LCD displays pH or mV readings along with temperature. Icons provide quick updates on battery life, electrode status and calibration information. Simple button layout and onscreen messages help with...

  • Waterproof pH Testers

    Features three-point push button calibration High accuracy ATC Self-diagnostic messaging Non-volatile memory Double-junction polymer sensor Waterproof pHTestr 30 is great for outdoor applications such as taking pH measurements in lakes and streams. Designed to float in water, you can even attach a...

  • PH200 Portable Meter Kit for Meat

    labForce® (powered by Thomas Scientific)

    The labForce® TS-MB200 portable meat pH meter is a perfect combination of the most advanced digital processing technology, software design, and electrochemical sensor technology, specially designed for the pH measurement of meat, meat products, fish, and beef. Its blade spear electrode uses a...

  • PH200 Portable Meter Kit for Food & Dairy

    labForce® (powered by Thomas Scientific)

    The labForce® TS-F200 portable food pH meter is a perfect combination of the most advanced digital processing technology, software design, and electrochemical sensor technology, specially designed for the pH measurement of food (meat, cheese, dairy products, fruit, etc.) and other...

  • PH100 Benchtop pH Meters

    labForce® (powered by Thomas Scientific)

    The labForce® PH100 Benchtop pH Meter provides accurate measurement, quick response time, and consistent result thanks to the advanced digital filtering technology. It has three measuring modes for your specific measuring needs: stable measurement display mode, timing measuring mode, and...

  • Traceable® Digital Salinity Meter

    labForce® (powered by Thomas Scientific)

    Traceable® pens for conductivity, dissolved solids, and salinity provides for conductivity, conductivity/total dissolved solids and salinity. Meters fulfill requirements for CAP, ASTM, NCCLS, CLSI, ACS, CLIA, AOAC, EPA, APHA, AWWA, WEF, USGS, USP, ISO and Federal/State regulations. Waterproof...

  • PH200 Portable pH Meters

    labForce® (powered by Thomas Scientific)

    The labForce® TS-PH200 Portable pH Meter combines advanced digital processing technology and software design, specially designed for all types of professional pH measurements. The meter has a ±0.01 pH accuracy in a range of -2.00-19.99 pH., with 0-100°C Automatic Temperature Compensation (ATC), Auto...

  • PC200 Portable pH/Conductivity Meters

    labForce® (powered by Thomas Scientific)

    The labForce® TS-PC200 Portable pH/Conductivity Meter combines advanced digital processing technology and software design, specially designed for all types of professional pH and conductivity measurements. The meter has a ±0.01 pH accuracy in a range of -2.00-19.99 pH., with 0-100°C...

  • PH200 Portable Meter Kit for Beverage Making

    labForce® (powered by Thomas Scientific)

    The labForce® TS-B200 Portable pH Meter is designed for professional pH measurement of for brewing, such as beer, wine, kombucha, juice, etc. The 3-in-1 Glass pH/Temperature Electrode adopts a Long-Life reference system, and a patented pH/temp. dual sensor structure, making precise beverage pH...

  • PH200 Portable Meter Kit for Purified Water

    labForce® (powered by Thomas Scientific)

    The labForce® TS-W200 Portable pH Meter is designed for professional pH measurement of purified water such as drinking/RO/distilled/deionized water and other low ion-concentration solutions. The 3-in-1 Glass pH/temp. Electrode uses a moveable sleeve junction, Long-Life reference system, and a...

  • PH200 Portable Meter Kit for Waste Water

    labForce® (powered by Thomas Scientific)

    The labForce® TS-WW200 Portable pH Meter is designed for professional pH measurement of wastewater, emulsions, and suspensions. The equipped 3-in-1 POM pH/Temp. Electrode uses Polymer electrolyte, Long-Life reference system, and a patented pH/temp. dual sensor structure, making precise...

  • Traceable® PH/ORP Meter

    labForce® (powered by Thomas Scientific)

    Compact instrument fits in the palm of your hand Accuracy: ±0.02 pH 25 point memory storage with time/date stamp Waterproof (IP67) Triple Display shows pH or ORP measurement, temperature and time\date Ideal for wastewater, water quality and environmental applications Traceable To NIST for...

  • PH200 Portable Meter Kit for Test Tubes & Small Samples

    labForce® (powered by Thomas Scientific)

    The labForce® TS-SS200 Portable pH Meter is designed for professional pH measurement in test tubes and small liquid samples (>0.2mL). The 3-in-1 POM pH/Temperature Electrode adopts a Long-Life reference system, and a unique cylindrical semi-micro sensor, making precise small sample pH...

  • PH200 Portable Meter Kit for Soil

    labForce® (powered by Thomas Scientific)

    The labForce® TS-S200 Portable pH Meter is designed for professional direct soil pH measurements. The 3-in-1 POM pH/Temp. Electrode uses Polymer electrolyte, Long-Life reference system, and a unique blue spear sensor tip, making precise direct soil pH measurement easier than ever. This soil pH...

  • M1000 Benchtop pH/mV/Conductivity/ISE/DO Meters

    labForce® (powered by Thomas Scientific)

    The labForce® M1000 Benchtop pH/mV/ISE/Conductivity/DO Meter features automatic calibration, automatic temperature compensation, data storage, timing measurement, clock display, RS-232 output, function setting and self-diagnose. It has three measuring modes for your specific measuring needs:...

  • PH200 Portable Meter Kit for Dairy Products

    labForce® (powered by Thomas Scientific)

    The labForce® TS-D200 Portable pH Meter is designed for professional pH measurement of dairy products (milk, buttermilk cream, yogurt, etc.) and other liquid food such as jam, BBQ sauce, syrup, etc. The 3-in-1 Glass pH/Temperature Electrode uses Proselyte electrolyte, Silver Ion Trap reference...

  • NineFocus pH Meter

    Mettler Toledo

    NineFocus™ is a high-performance, multiparameter benchtop meter system, ideal for accurate measurements of pH, conductivity, ion concentration, redox potential, and dissolved oxygen. Its modular design effortlessly adjusts to growing needs for additional parameters or increased productivity....

  • HI 9829 Multiparameter Meters

    pH/ORP/ISE, EC/TDS/Resistivity/Salinity/Seawater Specific Gravity, Turbidity, DO, Temperature and Atmospheric Pressure Rugged, waterproof and easy to use, the HI 9829 is the ideal meters for field measurements of lakes, rivers and seas. Both meters display 1 to 12 parameters simultaneously from up...

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