Hanna HI98129 TDS, PH, EC, and Temp Meter Features:
- High accuracy pH, EC/TDS and temperature measurements
- Waterproof Combo has a large easy-to-read, dual-level LCD and automatically shuts-off .
- EC/TDS and pH readings automatically compensate for the effects of temperature (ATC).
- Tester has a greatly extended life:
- Replaceable pH electrode cartridge with an extendable cloth junction.
- EC/TDS graphite electrode resists contamination by salts/other substances.
- User can select the EC/TDS conversion factor and the temperature compensation coefficient (ß)
Hanna HI98129 Meter Specifications:
- Range:
- pH: 0.00 to 14.00 pH
- EC: 0 to 3999 µS/cm
- TDS: 0 to 2000 ppm
- Temp: 0.0 to 60.0°C / 32 to 140.0°F
- Resolution:
- pH: 0.01 pH
- EC: 1 µS/cm
- TDS: 1 ppm
- Temp: 0.1°C / 0.1°F
- Accuracy:
- pH: ±0.05 pH
- EC/TDS: ±2% F.S.
- Temp: ±0.5°C / ±1°F
- Temperature Compensation: pH: automatic; EC/TDS: automatic with ß adjustable from 0.0 to 2.4% / °C
- Calibration:
- pH: automatic, 1 or 2 points with 2 sets of memorized buffers
(pH 4.01 / 7.01 / 10.01 or 4.01 / 6.86 / 9.18)
- EC/TDS: automatic, 1 point
- TDS Conversion Factor: adjustable from 0.45 to 1.00
- pH Electrode: HI 73127 (replaceable; included)
- Environment: 0 to 50°C (32 to 122°F); RH max 100%
- Battery Type / Life: 4 x 1.5V / approx. 100 hrs of continuous use; auto-off after 8 min. of non-use
- Dimensions: 163 x 40 x 26 mm (6.4 x 1.6 x 1.0")
- Weight: 100 g (3.5 oz.)
Hanna Instruments HI98129 Literature
Hanna Instruments HI98129 Manual
How to measure TDS Percent Rejection using Hanna TDS Meter :
Example:Tap TDS reading = 260 ppm
RO TDS reading = 20 ppm
Rejection = [(260 - 20) / 260] x 100
= [240/260] x 100
≈(.923) x 100
= 92.3%
