HM Digital

HM Digital COM-300 Multi-Parameter Water Tester   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...

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. Replaces the older SP-1 sensor. 

HM Digital HMCC-1 Controller Cover for PSC-154. COVER ONLY

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

SP-P2HM Digital Replacement Sensor for PH-200 HM Digital Replacement Sensor for PH-200

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

  ORP Buffer Solution and Electrode Test Kit HM Digital's pH buffer solution comes in powder form, so it's lightweight, takes up very little space, is inexpensive and has an indefinite...

HM Digital's pH buffer solution comes in powder form, so it's lightweight, takes up very little space, is inexpensive and has an indefinite shelf life. Use these buffers with any pH instrument...

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

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

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...

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,...