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Measures electrical conductivity (EC), total dissolved solids (TDS). Exellent for nutrient testing. Four scales: EC: µS, mS; TDS: ppm, ppt Automatic Temperature Compensation (ATC) Water resistant
HM Digital
HM Digital TDS 4 Pocket Size Tester Meter with 0 9990 ppm...
HM Digital TDS 3 Handheld Meter with Carrying Case, 0 9990 ppm...
HM Digital DM 1 in Line Dual TDS Monitor, 0 9990 ppm...
JuanJuan
Digital Water Quality Tester Dual Probe TDS EC Meter Range PPM Total...
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