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Replacement Probes and Sensors for pH Meters
Probes, modules and other accessories for water quality meters.
Calibration and Cleaning Solutions

Maintenance and calibration solutions for pH, conductivity and other water quality instruments.
HM Digital Waterproof pH Meter PH-200HM Digital Waterproof pH Meter, PH-200
Flag-ship of the manufacturer's pH line, the PH-200 has a rounded ergonomically comfortable design for hand-held operation. Incredibly accurate and perfect for both consumer or commercial use. NC-11100
$79.95
HM Digital pH Meter, PH-80HM Digital pH Meter, PH-80
The PH-80 is an economically priced, reliable pH meter that is ideal for testing applications such as hydroponics and gardening, pools and spas, aquariums and reef tanks, water ionizers, drinking water and more. NC-12651
$59.95