#hm digital

HM Digital DM-2EC Commercial In-Line Dual EC Monitor, 0-9990 S Range, +/- 2 Readout Accuracy

PH-STOR pH Electrode Storage Solution for Use with PH-200 or PH-80, 60cc Volume

HM Digital EC-3 Handheld Electrical Conductivity Tester Meter with Case, 0 - 9990 S Measurement Range, 1 S Resolution, +/- 2 Readout Accuracy

HM Digital AP-2 AquaPro Water Quality Electrical Conductivity Tester, 0-9999 S Range, 1 S Resolution, +/- 2 Readout Accuracy , Black

Hm Digital Hmdcom100 Waterproof Ec/Tds & Temperature Combo Meter

HM Digital Com-300 Ph/Tds/EC/Temp Meter

HM Digital ORP-200 Waterproof ORP Meter, -999 to +1000 mV ORP Range, 1 mV Resolution, +/- 0.5 Readout Accuracy

HM Digital ORP-STOR ORP Electrode Storage Solution for Use with ORP-200, 60cc Volume

HM Digital PH-STOR pH Electrode Storage Solution for Use with PH-200 or PH-80, 60cc Volume

HM Digital Ph-80 Handheld Hydro Tester Ph and Temperature Tester

HM Digital PH-200 Waterproof Temperature PH Meter, 3.3 & quot x 8.5 & quot x 2 & quot, White

HM Digital EC Meter EC-3M Electrical Conductivity Tester, Handheld Portable EC Temperature Water Test 0-9990 S, 1 S Resolution, 2 Readout Accuracy, with Leather case

HM Digital PH-80 pH Meter Waterproof PH80 Tester HydroTester

HM Digital COM-80 Ec/TDS Hydrotester for Testing Applications

Commercial In-Line Dual TDS Monitor

HM Digital TRM-1, 3X 1/4" Tee, Triple Inline TDS PPM Monitor/Meter

HM DIGITAL TDS Meters TDS-3 Handheld Temperature TDS Tester, 0 - 9990 ppm, 1 ppm Resolution, +/- 2 Readout Accuracy Testing Water Quality For Hydroponics Aquariums Pools Drinking etc

HM Digital SM-1 In-Line Single TDS Monitor, 0-9990 ppm Range, +/- 2 Readout Accuracy

HM Digital Triple Inline RO/DI TDS Monitor with 1/4 inch T-Fittings

HM Digital AP-1 AquaPro Water Quality Total Dissolved Solids Tester, 0-5000 ppm TDS Range, 1 ppm Resolution, +/- 2 Readout Accuracy

HM Digital TDS-EZ TDS Meter Handheld PPM Tester

HM Digital 1000ppm TDS Calibration Solution

HM Digital TDS-4 Pocket Size TDS Tester Meter with 0-9990 ppm Measurement Range , 1 ppm Resolution, +/- 2 Readout Accuracy

HM Digital TDS-3 Handheld TDS Meter With Carrying Case, 0 - 9990 ppm TDS Measurement Range, 1 ppm Resolution, +/- 2 Readout Accuracy

HM Digital 716147 HydroMaster Continuous pH/EC/TDS/Temp Monitor

HM Digital DM-2 Commercial In-Line Dual TDS Monitor, 0-9990 ppm Range, +/- 2 Readout Accuracy

HM Digital PH-200 Waterproof pH Meter, 0-14 pH Range, 0.01 pH Resolution, 0.02 Readout Accuracy

HM Digital SP-P2 Replacement PH Sensor for PH-200

HM Digital PSC-150 Extended Range EC/TDS Controller, 0-9999 S Measurement Range, 0.1 S/ppm Resolution, +/-2 Readout Accuracy

HM Digital C342 TDS and EC Calibration Solution, 342 ppm , 90 ml Volume

HM Digital DM-1 In-Line Dual TDS Monitor, 0-9990 ppm Range, +/- 2 Readout Accuracy

HM Digital 716160 COM-100 WATERPROOF PROFESSIONAL SERIES Combo Meter, 7", White/Purple

HM Digital COM-80 Electrical Conductivity and Total Dissolved Solids Hydro Tester, 0-5000 ppm TDS Range, 1 ppm Resolution, 2 Readout Accuracy

HM Digital TDS-EZ Water Quality TDS Tester, 0-9990 ppm Measurement Range , 1 ppm Resolution, +/- 3% Readout Accuracy