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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  • 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…

  • 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…

  • Extremely versatile—the meter automatically recognizes which sensors you plug in so you can easily switch parameters whenever you want Select a meter with the number of channels you need (1, 2, or 3) and the sensors for the parameters you are measuring (pH, conductivity, or DO) Eliminate…

  • Bellco Glass

    Specifications: Cable Has Ak9 Probe Connection And Bnc Controller Connection. Size: 6"

  • Measures multiple parameters Stores up to 25 data sets Waterproof to IP67 The PockeTester pH/Conductivity tracer measures five parameters including conductivity, TDS, salinity, pH and temperature using one electrode. Units of measure are pH, µS, mS, ppm, ppt, mg/L, g/L,…

  • Exclusive Oyster design can be used in the lab or in the field. Large LCD built into adjustable "flip up" cover displays pH or mV and Temperature simultaneously. Stores/recalls 25 labeled readings. Auto or manual Temperature compensation. 5 point buffer recognition. Includes meter, neck…

  • The 556 MPS handheld instrument has been discontinued. YSI will continue to support existing 556’s through 2020. The Professional Plus (Pro Plus) or ProDSS handheld instruments are suitable replacements. Versatile, multi-parameter hand-held instrument Measures…

  • 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 to…

  • 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…

  • 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…

  • 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…

  • Standard portable meters with no frills! Milwaukee’s 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. MW101 performs pH…

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

  • Hach products are intended for sale/shipment within the US only. International customers should contact their local Hach distributor to place orders for Hach products.

  • Thermo Scientific Orion

    Get high accuracy, premium performance and ultimate flexibility with the Thermo Scientific™ Orion™ Versa Star PRO Benchtop Meter with pH Module. Meet your most challenging applications for pH, mV, ORP and temperature. Easily view measurements on the stunning color display and customize…

  • Sper Scientific

    The Sper 850048 Combination Water Meter can Measure Dissolved Oxygen, pH, Conductivity, TDS, Salinity or Temperature Using Different Probes. This kit includes includes one conductivity/salinity probe. Additional probes (optional) also allow it to operate as a highly accurate pH meter, conductivity…

  • After more than a century of perfecting the art of measurement through our durable weighing products, OHAUS precision is now available in a line of pen meters that provide accurate measurement of pH, oxidation-reduction potential (ORP), conductivity, salinity, and total dissolved solids (TDS).…

  • 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…

  • 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…

  • Measures ORP from -999 to 999mV Automatic electronic self calibration Simulated analog bar graph displays change in ORP reading Memory stores and recalls 15 readings and saves last calibrated value Data validation indicators show user the reading is stabilized Large 3-1/2 digit (2000…

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    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…

  • Thermo Scientific Orion

    The Thermo Scientific Orion Star A321 pH Portable Meter is the top choice for advanced measurements on location. Get the information you need quickly and easily from the large, backlit graphic LCD display. Informative display shows pH/mV/RmV and temperature along with electrode status, time, date,…

  • Convenient, compact design with large display Measured parameter and temperature shown on display at same time Utilizes same electrodes as Oakton 6+ series Stability, calibration, and low-battery indicators Waterproof and dust-resistant IP57 rating – great for use under harsh…

  • GLP-compliant meter with pH, ORP, or ion concentration capability is perfect for water, wastewater, or food applications Large display with bright backlight Dynamic reading stability indication displays when your measurement is stable Up to 500-point memory with date-time stamp for GLP …

  • Thermo Scientific Orion

    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…

  • PH90 is a Waterproof ph Meter. Featuring a rugged, waterproof (IP57) housing with Flat Surface Electrode for measuring pH in liquids, semi-solids, and solids and also displays temperature on the large LCD. The electrode does not break or get junctions clogged like the traditional glass bulb probes.…

  • 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…

  • Milwaukee Instruments

    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…

  • 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 and phono jack printer connections Take it…

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    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…

  • Thermo Scientific Orion

    Get the readings that you need where you need them with the Thermo Scientific Orion Star A221 pH Portable Meter. The large, backlit graphic LCD display shows pH/mV/RmV and temperature along with electrode status, time, date and calibration points. Anyone can use this meter with its plain…

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