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

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  • 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...

  • Standard Portable pH / Temperature Meter

    Standard portable meters with no frills! Milwaukee’s low cost durable meters for quick and reliable measurements. Milwaukee’s Standard meters are manufactured to be easy to use, practical and accurate. Ideal for the classroom, laboratory or for general field use. MW102 is a...

  • Star™ A211 pH Benchtop Meters

    Thermo Scientific Orion

    Thermo Scientific Orion Star A211 pH benchtop meters are easy to use, dependable laboratory meters with advanced features and functions. Selectable read modes and stability indicator give you flexibility and control over your testing. All critical data is shown with your measurements including...

  • Eutech™ Elite pH Spear Pocket Testers

    pH/Temperature The Eutech™ Elite pH Spear pocket tester features a spear tip open pore sensor. This rugged and user-friendly tester is ideal for direct measurement of solid or semi-solid samples such as cheese, meat, fruit, bread and more. Used in applications such as hydroponics, food &...

  • 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.

  • 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...

  • AQUASEARCHER™  Bench Meter

    An Advanced, Research-Grade Benchtop pH Meter with Electrode Offering Accurate, Repeatable Results with selectable resolution from 0.1 to 0.001 and an intelligent i-Steward system, AB41PH has high resolution and consistent accuracy. Equipped with a 6.5-inch large LCD display and a touch keypad,...

  • Save On Meters, Stirrers, Mixers, Rockers, Buffers and Much More

    Save on benchtop equipment at the core of your productivity The benchtop equipment you rely on every day is often the key to the speed and efficiency of your workflows. For a limited-time, find big savings on the small devices that keep your lab functioning and help drive your research forward....

  • Orion Pro Star PI214 pH/Ion Bench Meter

    The Thermo Scientific™ Orion™ Pro Star PI214 pH/ion bench meter is designed to provide accurate, reliable electrochemistry testing. Featuring an intuitive interface, enhanced data reporting and robust functionality, the Orion Pro Star PI214 meter delivers advanced performance in a modern...

  • Datalogging Meter pH Kit

    Automatically log up to 4,000 readings or manually record 99 readings, each with pH, mV (supports ORP), °C or °F, time and date Review all data on the meter’s display or download with the included software Three point calibration with automatic buffer recognition indicating the number of days since...

  • TruLab 1110 pH/mV Benchtop Meters

    Measure pH, mV (ORP) and temperature accurately in the laboratory with the YSI pH 1110. This benchtop instrument for basic, routine measurements in the lab is an accurate and easy-to-use solution for repeatable pH or mV measurements. Features: Single channel measurement of pH or mV (ORP) and...

  • pH/CON 700 Benchtop Meter

    Easily toggle between pH, mV, conductivity, TDS, and temperature measurements at the touch of a button Space-saving design takes up less room on the bench than other meters Large display lets you see your measurements from across the lab Conductivity and TDS autoranging chooses the best resolution...

  • Tracer Pocketester

    Pocket-sized ISE meter with interchangeable sensor modules Waterproof design with rubberized housing Automatic shut-off and low battery indicator Memory saves calibration values and stores up to 15 readings Chlorine and pH also display sample temperature PockeTester measures chlorine directly in...

  • AQUASEARCHER™ Bench Meter

    Highly Reliable and User-Friendly pH Benchtop Meter with Electrode (ST310) for Standard Laboratory Applications with multifunctional touch keypads, AB33PH makes measurement simple and fast within 3 steps. The intelligent i-Steward monitors the condition of electrodes for accurate results. Auto...

  • Star A213 Dissolved Oxygen Benchtop Meter

    Thermo Scientific Orion Star A213 Dissolved Oxygen (DO) Benchtop Meter is the ideal choice for any lab. Get the information you need quickly and easily from the large, backlit graphic LCD display. Informative display shows dissolved oxygen in percent saturation or concentration and temperature along...

  • PCTSTestr™ 5 Waterproof Pocket Testers

    Save money by replacing sensor, not tester! Conductivity, pH, salinity, and TDS all in one meter 3-point calibration with automatic recognition of standards Large easy-to-read LCD features two-color backlight Rugged IP67-rated housing is waterproof, dustproof, and floats in water when sensor cap is...

  • FermProbe pH Probe,12x225mm Broadley-James

    The Fermprobe pH electrode with s8 metric cap features a standard s8 detachable cable connector on a metric pg 135 threaded polymer cap the design requires the rotation of the electrode during installation this style of pH Fermprobe is the first choice for small autoclavable bench-top vessels all...

  • Replacement Cuvettes & Accessories

    The Milwaukee MI0001 are replacement glass cuvettes for Milwaukee photometers. Set of two per box. The Milwaukee MI0011 are replacement glass cuvettes for Milwaukee turbidity photometer MI415. The Milwaukee MI0002 are plastic replacement caps for the MI0001 cuvettes for Milwaukee photometers. The...

  • 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...

  • ProQuatro Multiparameter Meter

    The ProQuatro was designed with the 4-port Quatro cable in mind. Combine 4 sensors on a single cable for comprehensive multiparameter sampling to measure temperature/conductivity, DO, and any two ISEs among pH, ORP, ammonium, chloride, or nitrate. Pairing the ProQuatro with the 4-port cable creates...

  • Lab Star PH111 pH/mV Bench Meter

    LSTAR1110 The Thermo Scientific™ Orion™ Lab Star PH111 pH/mV Bench Meter is ideally suited for laboratories with users of varying levels of technical expertise and who require a simple-to-calibrate and use meter for routine pH testing. Scientists have trusted Thermo Scientific Orion Lab...

  • 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...

  • ProDSS Handheld Multiparameter Sampling Instrument

    The YSI ProDSS (digital sampling system) is a portable water quality multiparameter instrument for the measurement of several critical parameters - dissolved oxygen (optical), turbidity, pH, ORP, conductivity, specific conductance, salinity, TDS, resistivity, TSS, ammonium, ammonia, chloride,...

  • Multi 3320 Set 1 pH/Dissolved Oxygen/Conductivity Meter

    Multi 3320: The Environmental Expert The Multi 3320 for measurement of pH, ORP, ISE, conductivity and dissolved oxygen (electro chemical) is a perfect meter for environmental applications in ground and surface water, aqua culture, waste water treatment plants and much more. An integrated ISE routine...

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