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

Reliably measure pH, mV, ORP and temperature with the Thermo Scientific™ Orion™ Star A211 pH Benchtop Meter for advanced lab analysis and printer or computer interfacing

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

Take simple pH, mV and temperature measurements with the Thermo Scientific™ Orion™ Star A111 Benchtop pH Meter with easy operation for basic lab testing

Compact, benchtop meter provides high quality pH/mV measurements with simple click of a button

Accurate measurements any time, anywhere

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

Provides the essential functions needed for routine pH measurements without complicated features and processes at a budget-friendly price

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

Dual Display of pH and Temperature plus high accuracy

Accurate measurements any time, anywhere

Get premium performance and ultimate flexibility with the Thermo Scientific™ Orion™ Versa Star Pro™ Meter with pH Module for pH, mV, ORP and temperature on customizable color display

Oakton pH 50 Spear Waterproof Pocket pH Testr™ 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

Compact, benchtop meter provides high quality pH/mV measurements with simple click of a button

Accurate measurements any time, anywhere

Easy to use first time and every time, prepare students for laboratory and research applications using professionally proven benchtop meters.

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

Get premium performance and ultimate flexibility with the Thermo Scientific™ Orion™ Versa Star Pro™ Meter with pH / LogR Module for pH, mV, ORP and LogR temperature technology

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

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

These rugged, compact meters offer high accuracy at an extremely affordable price.

Compact, with large dual-display LCD

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

Versatile and Universal

Rugged, compact meters with high accuracy

For basic everyday pH routines

InnoCal™ NIST-Traceable Calibration provides services that ensure the accuracy of your pH measurement instrumentation

Rugged design with backlit display for use in any environment

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