HM Digital HydroMaster Continuous pH/EC/TDS/Temp Monitor Model HM-500 Size:HM Digital HydroMaster HM-500 conductivity and temperature levels in

conductivity and temperature levels in reservoirs

packed-bed design to deliver the best performing carbon filter on the market

reservoir drain outlet

2-gallon translucent poly tank and carrying strap for portable use

and 4 ft x 8 ft models are large enough to fit the largest plastic grow trays on the market

HM Digital HydroMaster Continuous pH/EC/TDS/Temp Monitor Model HM-500 Size:HM Digital HydroMaster HM-500 conductivity and temperature levels inHydroMaster Digital tester makes monitoring water easier than ever by reading the levels that matter most and providing accurate readings that you can depend on. Continuous pH EC TDS Temp monitor with rechargeable battery. Portable, wall mount or benchtop use. Tests pH at a range of 014 pH, temperatures from 30F176F, TDS from 09999 ppm and EC from 09999 S. Stores up to 20 measurement readings, so you can monitor changes over time. LCD touch type