The portable water hardness meter is a professional instrument with multi-function,can be used to testing water TDS (the weight of total dissolved solid of water,unit is mg/L or ppm) conductivity (the ability of conduction current expressed in digit,unit is us/cm)and the temperature. It has high performance,pen-type design,fast numerical stability and accurate result. Measure range: - Conductvity: 0-9999 us/cm - TDS:0-9999 ppm - Celsius:0.1-80.0°C - Fahrenheit: 32.0-176.0F - Accuracy :±2% Dimensions mm 154x30x13
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