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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  • 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…

  • Mettler Toledo

    Robust in design, optimized for one-handed use, and comprising an intuitive menu structure, the Seven2Go portables offer quality pH measurement for laboratory, at-line, and outdoor environments. Simple Menu - Intuitive Operation Seven2Go's new intuitive menu guarantees…

  • Professional pH/mV/ISE meter with DIN socket, backlit graphic display, for mobile application with data logger and USB interface. Single instrument including instruction manual, CD-ROM and batteries, cable

  • Hanna Instruments

    Dedicated to soil pH measurement Specialized soil pH electrode Multi-level LCD display User friendly operation using only 2 buttons On-screen tutorial messages Automatic Temperature Compensation Automatic one or two point calibration BEPS (Battery Error Prevention System)…

  • tsdeals

    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…

  • Sper Scientific

    Rugged housing with large LCD displaying the parameter being measured together with time, date and temperature (in ºC or ºF). Automatic or manual temperature compensation Automatic or manual ranging Automatic buffer recognition Digital and analog outputs Min/Max and 99 data points …

  • Built-in Smart chip offers advanced functions and features to a stick style pH meter not found anywhere else RENEW feature that tells you when it's time to replace your pH electrode CAL feature that tells you when it's time to recalibrate your meter Flat Surface pH electrode that is…

  • 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…

  • Simple-to-Use Benchtop Meter Designed to Easily Measure Conductivity, TDS and Salinity. With six instructional menu buttons and auto temperature compensation, it is an easy and straightforward meter for measurement. A large 5-inch backlit LCD display with complete measurement information simplifies…

  • 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…

  • Thermo Scientific Orion

    Add pH measurement to your meter with the Thermo Scientific™ Orion™ Versa Star™ pH/ISE Multiparameter Module. Select from five measurement modules to customize your meter’s four channels as you need it. The module allows you to design the exact meter you need now, with the…

  • PCSTestr™ 35, PCTestr™ 35 and PTTestr™ 35 Mutiple measurements in one instrument Displays measured value along with temperature — simply press a key to toggle between pH, conductivity, TDS, and salinity where applicable Waterproof, dustproof housings float …

  • Professional Multi-Channel Meter with Touch Screen SevenExcellence™ is the perfect choice for applications where maximum measurement accuracy is required. The multi-channel instrument allows measurements of 1, 2 or 3 parameters simultaneously, either in the same or in different samples.…

  • Includes EC500 pH/Conductivity meter with combination high accuracy multi-ranging Conductivity sensor for Conductivity, TDS, Salinity, pH and Temperature measurements Includes DO600 Dissolved Oxygen meter with electrode, replacement membrane cap, electrolyte, and polishing paper Complete with…

  • The EcoSense ® pH10A pen-style instrument provides an ultimate feature set over similar competitive models. The pH10A features an easy-to-use graphic interface, simple one-hand operation, memory, and low cost of ownership over the life of the product. The easy, user-replaceable electrode…

  • pH/Conductivity/TDS/Salinity/Temperature The Eutech™ Elite pH and CTS pocket tester simultaneously displays pH, conductivity/TDS/salinity with temperature. This offers a suitable method to measuring multiple parameters with just one meter. This tester can be used with the following…

  • SevenGo Duo™ combines user-friendliness, quality and reliable measurements. The meter is designed so a single keystroke triggers a calibration/ measurement and allows accessing stored results or system settings. The kit versions are also well suited for outdoor use or use in the production…

  • 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…

  • Hanna Instruments

    Waterproof and designed to float Cloth, renewable junction Close proximity temperature probe Automatic Temperature Compensation Automatic 1 or 2 point pH calibration Tactile grip casings HOLD function BEPS (Battery Error Prevention System) Battery % displayed at startup …

  • Oakton

    High ±0.01 pH accuracy at economical prices Reads pH and temperature Automatic Temperature Compensation (ATC) All push button operation Three-point pH calibration Auto buffer recognition Hold function; Auto-off Use with most pH electrodes with BNC connectors …

  • The Thermo Scientific™ Expert pH Pocket Tester is designed for on-the-go measurements of pH and temperature. The Expert pH Pocket Tester is best used in applications such as hydroponic gardening, aquaculture, agriculture, pools, cooling towers, and more! Large 4 digit double line…

  • The Thermo Scientific™ Expert CTS Pocket Tester is designed for on-the-go measurements such as – Conductivity, TDS, Salinity, Temperature and other related electrochemistry measurements. The Expert CTS Pocket Tester is best used in applications such as environmental monitoring,…

  • Milwaukee Instruments

    Combination waterproof testers with advanced functions also include the new model pH58 for simultaneous pH and ORP measurements and temperature, which is continuously displayed on the dual level LCD. It shows readings in an extended range from -2.00 to 16.00 pH or ±1000 mV and…

  • The pH/Ion Meter SevenDirect SD50 provides accurate pH and ion concentration measurements for almost any sample across a wide range of applications. The EasyPlace electrode arm and protective cover are included with the instrument. The benchtop meter's ease of use, data handling…

  • Metrohm

    In addition to pH, voltage and temperature measurement, the 780 pH Meter also offers an automatic stirrer control, a multi-point calibration with up to nine buffers, a method memory and various monitoring functions. The automatic pH electrode test in conformance with GLP permits objective…

  • ORP Probe for Professional Plus Handheld Multiparameter Meters. For lab-grade and field applications Easy user-replaceble sensor allows for quick sensor replacements if needed Measure ORP (oxidation reduction potential), or redox, quickly and easily with the 1002 sensor

  • Extremely versatile—the meter automatically recognizes which sensors you plug in so you can easily switch parameters whenever you want Eliminate downtime with smart sensors that feature built-in calibration and measurement information Rugged, waterproof and dustproof housing with an IP67…

  • Large LCD built into adjustable "flip-up" cover displays measurement and Temperature simultaneously Microprocessor based with splash proof housing and front panel tactile touch pad to slope and calibrate Rugged design for handheld or benchtop use; neckstrap for…

  • Bellco Glass

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

  • 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…

  • 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…

  • The AB33M1 utilizes 2 independent measuring channels which can work simultaneously. With multifunctional touch keypads, AB33M1 makes measurement simple and fast. The intelligent i-Steward monitors the condition of electrodes, ensuring the accuracy of the results. A 1000-item memory for measurement…

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