Specifications Conductivity Range 0 to 3999 µS/cm Conductivity Resolution 1 µS/cm Conductivity Accuracy ±2% F.S. TDS Range 0 to 2000 ppm (mg/L) TDS Resolution 1 ppm (mg/L) TDS Accuracy ±2% F.S. Temperature Range 0.0 to 60.0°C / 32.0 to 140.0°F Temperature Resolution 0.1°C / 0.1°F Temperature Accuracy ±0.5°C /±1°F EC/TDS Calibration automatic, one-point at: 1413 µS/cm, 1382 ppm (mg/L) Temperature Compensation automatic, with β adjustable from 0.0 to 2.4% / °C TDS Conversion Factor 0.45 to 1.00 Battery Type/Life 1.5V (4) / approx. 100 hours of continuous use, auto-off after 8 minutes of non-use Electrode/Probe HI73311 replaceable EC/TDS graphite electrode (included) Environment 0 to 50°C (32 to 122°F); RH max 100% Dimensions 163 x 40 x 26 mm (6.4 x 1.6 x 1.0’’) Ordering Information HI98311 (DiST5) is supplied with HI73311 EC/TDS probe, HI73128 probe removal tool, batteries and instructions.