The Bresle Test will measure contamination of water-soluble salts and corrosion products on blast-cleaned steel.

The RF-IT and CE-IT test above and below ground pipeline insulators.

Developed for ease of use and to prevent outside and cross contamination.

Portable surface resistivity meter that provides useful measurement information about the state of a concrete structure.

One high accuracy multi-range sensor measures four parameters (Conductivity, TDS, Salinity and Temperature)

Developed for ease of use and to prevent outside and cross contamination.

The Oakton conductivity pocket testers stand up to everyday use and harsh environments.

This instrument is a portable digital meter to measure low resistances over the range 0.001Ω to 200Ω.

The Model SR-2 is a very accurate resistance meter with a digital display.

The Laquatwin series are compact water quality meters fully water and dust proof that measure at the touch of a button.

The Laqua pH Meters are great for testing pH in the lab, in the field or anywhere you need it.

The Laqua Benchtop Meters are water quality instruments and are used for pH, ORP, Ion and Temperature testing.

The Laqua pH Electrodes are a variety of electrodes used with pH meters for many types of applications.

Flat Surface pH Electrode and Heavy Duty pH/mV Temperature Meter.

Flat surface electrode allows "on the spot" measurements of liquid, semi-solid, or solid samples.

This pH/ORP Tester is perfect for general purpose, environmental, pool & spa, aquaculture or other pH and temperature measurements.

The pH 700 and 2700 Series benchtop meters designed for today's crowded and demanding laboratories.

Special pH Electrodes specifically designed for paints and come complete with soaker bottle, a 3 foot cable and BNC connector.

More responsive than a glass electrode, these pencils are used for determining the pH of any surface.

Unique pH electrode uses a flushing mechanism into reference junction assembly of a standard epoxy or glass body pH electrode.

The Waterproof EcoTestr pH Po2+ is a pocket pH meter that makes water quality testing easier.

The Oakton pH pocket testers stand up to everyday use and harsh environments.

Measure % concentration of oxygen in air & parts per million dissolved oxygen in aqueous solutions.

The TQC Amine Blush Kit is a multi step amine blush indicator.

Waterproof pH Meter with big digit LCD display in rugged housing with a choice of stick or cabled pH Electrode.

The pHTester 30 features a large display screen and has up to ±0.01 pH accuracy.

This instrument is a versatile, convenient and accurate spear-tip pH tester.

The pHTestr BNC is waterproof, dustproof and has microprocessor-based, all push-button operation.

The M100+™ is a Laboratory Turbidimeter and offers an easy solution for verifying operation of online turbidimeters.

Measure & display 11 parameters simultaneously with innovative features, newly designed control unit and sensor technology.

The OCMA 500 and 550 are oil content analyzers used for measurement of oil of wastewater and oil on components.

The microprocessor-based ORPTestr® is ideal for oxidation-reduction (redox) tests.

An article written by Decagon Devices, Inc. about water activity.