Multiple measurement units (ppm

Pure Glass Construction — No plastic taste or chemical leaching for the purest water experience

Always store with the cap full of buffer or storage solution not water

Placed in the lower reservoir of your Gravity Water System

and easy calibration

HM Digital HM-200 pH EC TDS Monitor - Portable 5-in-1 Water Quality Tester Santevia ceramic filter Multiple measurement units (ppmProfessional Portable 5 in 1 pH EC TDS Salinity Temperature Monitor The HM Digital HM 200 is a professional grade portable monitor that simultaneously displays pH, Electrical Conductivity (EC), Total Dissolved Solids (TDS), Salinity, and Temperature on a large LCD screen. With replaceable sensors, digital calibration, and automatic temperature compensation, this versatile monitor delivers accurate, reliable measurements for hydroponics, water