HM Digital Replacement Sensor for COM-100

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

SP-O2HM Digital Replacement Sensor for ORP-200 HM Digital Re

Brand New! The COM-80 is a reliable, economically priced, EC/TDS meter that is perfect for testing applications like hydroponics, gardening, pools, spas, aquariums, reef tanks, water ionizers,...

Clearance ( NEW OLD STOCK ) - small scratch on screen     Brand New! The COM-80 is a reliable, economically priced, EC/TDS meter that is perfect for testing applications like hy

HM Digital COM-300: Waterproof Professional Series pH/EC/TDS/Temp Meter The COM-300 is a professional grade level pH/EC/TDS/Temp meter ideal for all water quality testing, hydroponics, water

HM-500 Series Inline Oil in Water UV Fluorometric Sensors Description The Pyxis HM-500 series inline fluorometer sensors measure the concentration of oil in water read as ppm Marine Crude-Offshore...

HM Digital SP-1/SP-1-PSC Replacement Sensor Used with HM Digital Controllers PSC-150, PSC-154 and CIC-152 to include the older PC and PS series controllers.

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