HM Digital Com-300 pH/TDS/EC/Temp Waterproof Combo Meter

Compact, waterproof combo meter from HM Digital, the Com-300 measures pH, TDS, EC and temperature with superior accuracy for reliable water-quality monitoring. Ideal for hydroponic systems, water gardens, ponds and other similar applications, it’s built for reservoir and sump use and includes a sump-type screened inlet to ensure steady, debris-free sampling.