HM Digital Replacement Sensor for ORP-200

Ideal for all pH testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools & spas, ecology testing,...

ORP-200: Waterproof ORP Meter Ideal for all ORP testing, including anti-oxidant measurement, water purification applications, ionizers, agriculture, aquariums & aquaculture, chlorine...

SP-C1HM Digital Replacement Sensor for COM-100 HM Digital Replacement Sensor for COM-100

Replacement probe for PH-200: Waterproof pH Meter for Measures pH and Temperature.

Myron L RPT3 Replacement ORP sensor for PT3 ORP meter