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EC Range: 0 to 3999 μS/cm
EC Resolution: 1 μS/cm
EC Accuracy: ±2% FS
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
Calibration: automatic, one point at 1413 μS/cm, 1382 ppm (CONV 0.5) or 1500 ppm (CONV 0.7)
EC/TDS Temperature Compensation: automatic, 0 to 60°C (32 to 140°F) with β adjustable from 0.0 to 2.4%/°C with 0.1% step
EC/TDS Factor: adjustable from 0.45 to 1.00 with 0.01 step (default 0.50)
Electrode/Probe: HI76306 EC/TDS probe with internal temperature sensor, DIN connector and 1 m (3.3’) cable (included)
Battery Type/Life: 1.5V AAA (3) / approximately 500 hours of continuous use. auto-off after 8 minutes of non-use
Environment: 0 to 50°C (32 to 122°F); RH max 100%
Dimensions: 152 x 58 x 30 mm (6.0 x 2.3 x 1.2”)
Weight: 205 g (7.2 oz.)
Ordering Information: HI99300 is supplied with HI76306 EC/TDS probe, batteries, instruction manual, and rugged carrying case.
Option:
- HI7032M 1382 mg/L (ppm) TDS Calibration Solution (230mL Bottle)
- HI70442M 1500 mg/L (ppm) TDS Calibration Solution (230 mL Bottle)
- HI7031M 1413 µS/cm Conductivity Standard (230mL Bottle)



