Take simple pH and temperature measurements with the Thermo Scientific™ Orion™ Star A121 Portable pH Meter with easy operation for basic field testing.

Reliably measure pH, mV, ORP and temperature with the Thermo Scientific™ Orion™ Star A221 pH Portable Meter for advanced field analysis and printer or computer interfacing

Accurate measurements any time, anywhere

Portable meter provides reliable and high quality pH/mV measurements with simple click of a button

Versatile, compact design works in a field or laboratory setting.

Accurate measurements any time, anywhere

High +/-0.01 pH accuracy at an economical price.

Rugged, reliable and accurate meter to measure pH, mV and temperature

Flexible on-the-go pH and temperature testing using durable Elite pocket testers with replaceable sensors for a variety of applications including environmental monitoring, pools, spas and more!

Oakton™ PCTSTestr™ 5 Waterproof Pocket Tester performs conductivity, pH, salinity, and TDS testing all in one meter

Oakton pH 50 Spear Waterproof Pocket pH TestrTM unique junction design provides increased electrolyte flow, resulting in greater contact between sample and reference, ensuring fast, stable readings. Large electrode junction makes clogging virtually impossible

Accurate measurements any time, anywhere

Oakton™ pHTestr™ Waterproof Pocket pH Testers have large easy-to-read LCD display featuring three-color backlight

Ideal for mobile applications in the laboratory, at-line, and outdoors

Oakton pHTestr 50 has a replaceable double junction sensor for longer life, an expanded number of applications, and easy maintenance. Versatile, compact design works in the field or laboratory

Accurate measurements any time, anywhere

Rugged design with backlit display for use in any environment

Oakton™ ORPTestr™ 5 Waterproof Pocket Tester features a large easy-to-read LCD with a three-color backlight

Oakton™ EcoTestr™ Waterproof Pocket Testers are designed to be durable and easy to use

Reliably measure pH, mV, ORP and temperature with the Thermo Scientific™ Orion™ Star A221 pH Portable Meter for advanced field analysis and printer or computer interfacing

Pocket pH meter with large display; accepts pH combination electrode with BNC connector

Oakton™ CTSTestr™ 5 Waterproof Pocket Tester offers onductivity, salinity, and TDS testing all in one meter

A premier waterproof meter that's affordable

Additional key provides an easier, more intuitive interface. Improved cap functions as a sample cup and as a stabilizing base to stand the meter upright. IP67-rated housing is waterproof and floats. This new addition to the Oakton EcoTestr product line features updates to make measuring water quality easier and faster. The display is larger with a better viewing angle, has indicators for battery life, readiness, and calibration, and shows both the parameter and temperature readings at the same time. To enhance field use, the cap was redesigned to be leakproof and can be attached to the top of the meter when not being usedno more lost caps! The cap features a fill line, so you know how much sample you need for an accurate reading when using the cap as a sample cup. It is also wider, providing a base to keep the meter upright for hands-free measurements. The keypad now has a fourth key to simplify menu navigation while keeping convenient one-touch calibration.

LCD meters combine portability with precise pH measurement.

Big Digit LCD display in rugged housing with choice of stick or cabled pH ElectrodeLarge LCD displays pH or mV and temperature simultaneouslyMicroprocessor provides for automatic buffer recognitionMemory stores 15 readingsAutomatic temperature compensation via Pt-100 sensor built into electrodeUnit is completely waterproof when electrode is

Highly stable and accurate readings with a large LCD display. Designed for simple one-hand operation. Automatically calibrates to pH 4, 7, 10 buffers and can be adjusted to recognize non-standard buffers as well. Features hold function, and auto power off with low battery indicator. The case is IP65 waterproof, and will float if accidentally dropped into the water. Comes with 4 button-cell batteries and a built-in electrode kept moist with a protective cap.

The economical, simple-to-use pH tester measures pH levels and temperatures quickly, displaying them both simultaneously on a large dual-line LCD. It has a pH range from 0 to 14 with an accuracy of ±0.1 pH. The tester features up to three pH calibration points with auto NIST and US buffer recognition. Additional features include a long-lasting durable electrode with polymer reference electrolyte; status icons for measurement stability, calibration, and battery life; and self-diagnostics. The IP67-rated housing features an easy-to-grip design and floats if accidentally dropped in water when sensor cap is on. The tester, powered by four AAA batteries, can operate up to 400 hours continuously. The unit will auto power-off after 8 minutes of nonuse to conserve power.

Test Tube pH Pen