Field pH Meters

Field 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.

Thomas carries a large selection of benchtop and portable pH meters for all your pH testing needs. Find the pH Meter or pH Tester best suited to your application.

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    Oakton

    Achieve professional results at an economical price! The microprocessor-based pH 6+ meter gives you high accuracy and reliability. Use this meter to take pH, mV and temperature measurements. The millivolt readout lets you take ORP readings. Meter includes a protective rubber boot that also acts as…

  • 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…

  • Affordable Benchtop pH Meter with Electrode ST320 for Basic Laboratory Applications. User-friendly bench meter that clearly displays information - with five distinctly marked keys which allow users to operate with minimal training. Designed with a clear, user-friendly interface and the ability to…

  • Great general-purpose meter for laboratories where GLP data-management is required Large display with bright backlight Dynamic reading stability indication indicates when your measurement is stable Up to 500-point memory with date-time stamp for GLP Password protection for both setup…

  • Hanna Instruments

    Fast and accurate readings for the cost of a few rolls of litmus paper 3,000 hours of continuous use Large, easy-to-read LCD Range: 0-14 pH; resolution: 0.1 pH; accuracy: ±0.2 pH Manual, two-point calibration Checker 1 testers have a replaceable screw-type combination pH electrode.

  • Milwaukee Instruments

    pH55 IP65 Waterproof pH tester with Large dual-level LCD that displays pH and temperature (°C or °F). The large display shows readings in an extended range from -2.0 to 16.0 pH and simultaneously shows temperature from -5.0 to 105.0°C or 23.0 to 221.0°F. pH56 IP65 Waterproof pH…

  • 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…

  • Electrodes are filled with gel reference electrolyte under a pressure of 25 BAR pressure range from vacuum up to a process of max 36 PSI 25 BAR. Temperature range steam sterilization autoclave to 266F to 130C. In-Situ sterilization up to 100 cycles under standard conditions. Gel electrolyte…

  • 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…

  • Simple to Use Benchtop Meter for Easily Measuring pH and ORP. Designed with a large LCD Display and six instructional menu buttons, AB23PH is a simple and straightforward pH meter. Auto buffer recognition and 3-point calibration capability ensures a reliable calibration result. Stand-alone holder…

  • Mettler Toledo

    The Mettler Toledo electrode holder uPlace and protective cover are suitable for use with Seven2Go Pro, SevenExcellence, SevenCompact, Seven2Go meter models. Mettler products are intended for sale/shipment within the US only. International customers should contact their local Mettler distributor…

  • Thermo Scientific Orion

    Perform basic pH measurements quickly and reliably with Thermo Scientific™ Orion™ Basic Electrodes, for use with Orion™ Russell meters.

  • The EcoSense® pH100M handheld instrument provides accurate and repeatable pH, mV, and temperature measurements in an affordable format. Compared to the EcoSense® pH100A, the pH100M features extended memory and simple data transfer with a micro-USB port. Features of the pH100M include:…

  • This versatile meter has a large, color graphic LCD display. The informative display shows readings, connections, time, date, sample ID, user ID and calibration information.  Select from five modules to customize the four channels as you need it - it's versatile for you…

  • Rugged, waterproof, and dustproof with an IP67 rating for use in any environment Nonslip ergonomic design for comfortable handling Easily view measurements with large monochrome LCD with white LED backlighting Download and analyze data with USB output (model 260) and phono jack printer…

  • Refillable, combination pH electrode for general laboratory purposes as well as beer testing. Reference: single, Ag/AgCl Junction/Flow Rate: ceramic, single / 15-20 µL/h Electrolyte: KCl 3.5M + AgCl Max Pressure: 0.1 bar Range: pH: 0 to 13 Recommended Operating Temp.:…

  • Mettler Toledo

    uGo™ Carrying Case Robust, light, and easy-to-clean. The uGo carrying case is IP67 and has a hermetically sealed interior that allows easy cleaning; regardless of the application. For Seven2Go and SevenGo Duo portables. Seven2Go Bench Stabilizing Unit Seven2Go accessory that…

  • The Milwaukee MW180 5-in-1 MAX pH/ORP/EC/TDS/NaCl/Temp. Logging Bench Meter has won fans around the world with its reliable, fast and simple operation as well as its tough, sleek design and small benchtop footprint. It is accurate to ± 1% of reading for EC/TDS/NaCl and up to +/-0.002…

  • 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…

  • Reliable pH/mV and Ion measurement for the lab Optimized for pH/mV and ion measurement in the laboratory, at-line, or outdoors, the new Seven2Go Pro S8 portable is designed to provide users with fast quality data, one-handed operation and durability. Robust in design, optimized for…

  • Digital display meters/monitors for use with CG-1872 pH electrodes with an integrated PT100 sensor for temperature correction. Connection is made using a standard BNC probe connector with a 3-pin banana connector plug for RTD. CG-1872-M-20 Meters Are Supplied with CG-1872-M-25 Adapter Cables. …

  • Sper Scientific

    Fits standard test tubes 16x50mm or larger Highly stable and accurate readings with a large LCD display. Designed for simple one-hand operation. Automatically calibrates to pH 4, 7 and 10 buffers and can be adjusted to recognize any buffer. Features hold function, and auto power off with low…

  • The EcoSense® pH1000A benchtop instrument provides accurate measurements in an affordable format. The instrument features an easy-to-use interface and 1, 2, or 3 point pH calibration. In addition to pH, the pH1000A also measures ORP - Oxidation Reduction Potential (mV) and temperature. The…

  • Hanna Instruments

    The pHep ® 4 tester is for users that require the greatest accuracy and features while staying economical. This model has BEPS as well as user selectable automatic shut-off, replacable pH electrode cartridge, stability indicator and automatic calibration. Waterproof and designed to…

  • 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…

  • Advanced pH Meter Reads either pH (in 0.01 resolution) or mV in large digits, with time, date, and temperature (in ºC or ºF) shown simultaneously on the lower display. Also indicates stable reading, low battery and displays calibration data. Scroll 99 data points with time stamps and min/max…

  • Electrodes are filled with gel reference electrolyte under a pressure of 25 BAR pressure range from vacuum up to a process of max 36 PSI 25 BAR. Temperature range steam sterilization autoclave to 266F to 130C. In-Situ sterilization up to 100 cycles under standard conditions. Gel electrolyte…

  • Milwaukee Instruments

    With Milwaukee's MC Controllers you can monitor and control pH and/or ORP levels. The Milwaukee Instruments "MC" Controllers have a user selectable set point and a visual "Power Activated" LED notification light. Power to the controller box is turned on when the reading…

  • The Thermo Scientific Orion Star A329 pH/ISE/Conductivity/RDO/Dissolved Oxygen Portable Meter is the top choice for advanced multiparameter measurements on location. Get the information you need quickly and easily from the large, backlit graphic LCD display. Informative display can show each…

  • Affordable optical RDO technology eliminates maintenance time and costs Durable waterproof and dustproof design with IP67 rating Eliminates costly, tiresome membranes and solutions Barometric pressure and salinity correction USB and RS-232 output for up to 500 data sets …

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    Milwaukee Instruments

    Control the pH of your tank/reservoir AUTOMATICALLY! The MC122 pH controller and dosing pump (MP810) provides fully automated pH control of aqueous solutions in hydroponic systems. It has been specifically designed to control the pH in mixing tanks for fertilization. The small and precise…

  • Measure pH, mV (ORP) and temperature accurately in the laboratory with the YSI pH 1310 or 1310P with built-in printer. The TruLab pH 1310 benchtop meter is the ideal laboratory instrument for reliable pH/mV measurements with automatic documentation for GLP compliance. The 1310 benchtop is an…

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