Waterproof and it floats!, High accuracy, Automatic calibration and temperature compensation, HOLD function, BEPS (Battery Error Prevention System), When the original DiST (Dissolved Solids Tester) was first introduce, conductivity and total dissolved solids measurements became easy and affordable, The DiST"s ease of us, in combination with its affordability made it the standard in EC and TDS measurement, HANNA continues the standard in EC and TDS testing with the DiST5, This tester includes features such as: a replaceable graphite electrod, adjustable TDS rati, C or F measuremen, Automatic Temperature Compensation (ATC) with adjustable , battery level indicato, stability indicato, automatic shut-off and automatic calibration, The graphite conductivity electrode provides greater accuracy because it resists contamination by salt deposits in the sample, All of these features are packed in a floatin, waterproof casing, This 3-in-1 tester is unmatched in EC/TDS/ temperature measurements, Order Information:, HI 98311 (DiST 5) is supplied with HI 73311 EC/TDS prob, HI 73128 probe removal too, batteries and instructions, Specfications: Range EC 0 to 3999, TDS 0 to 2000 ppm, Temperature 0, 0 to 60, 0C / 32 to 140, 0F, Resolution EC 1, TDS 1 ppm, Temperature 0, 1C / 0, 1F, Accuracy EC 2% F, S, TDS 2% F, S, Temperature 0, 5C / 1F, Calibration automati, one point at 1413 or 1382 mg/L (ppm), TDS Conversion Factor adjustable from 0, 45 to 1, 00, Temperature Compensation automati, with adjustable from 0, 0 to 2, 4% / C, Environment 0 to 50C (32 to 122F); RH max 100%, Battery Type / Life 1, 5V (4) / approximately 100 hours of continuous us, auto-off after 8 minutes of non-use, Length: 8, 4, Height: 1, 3, Width: 2, 7 SKU: HNNI010