The HI 98129 Combo waterproof tester offer high accuracy pH, EC/TDS and temperature measurements in a single tester! No more switching between meters for your routine measurements. The waterproof Combo (it even floats) has a large easy-to-read, dual-level LCD and automatic shut-off. pH and EC/TDS readings are automatically compensated for the effects of temperature (ATC). This technologically advanced tester has a replaceable pH electrode cartridge with an extendable cloth junction as well as an EC/TDS graphite electrode that resists contamination by salts and other substances. This gives these meters a greatly extended life. Your tester no longer needs to be thrown away when the pH sensor is exhausted.
The EC/TDS conversion factor is user selectable as is the temperature compensation coefficient . Fast, efficient, accurate and portable, the Combo pH, EC/TDS and temperature tester brings you all the features you've asked for and more!
| Range | pH | 0.00 to 14.00 pH |
| Range | EC | 0 to 3999 S/cm |
| Range | TDS | 0 to 2000 ppm |
| Range | Temperature | 0.0 to 60.0C / 32 to 140.0F |
| Resolution | pH | 0.01 pH |
| Resolution | EC | 1 S/cm |
| Resolution | TDS | 1 ppm |
| Resolution | Temperature | 0.1C / 0.1F |
| Accuracy | pH | 0.05 pH |
| Accuracy | EC/TDS | 2% F.S. |
| Accuracy | Temperature | 0.5C / 1F |
| Temperature Compensation | pH: automatic; EC/TDS: automatic with 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) |
| Calibration | EC/TDS | automatic, 1 point |
| TDS Conversion Factor | adjustable from 0.45 to 1.00 | |
| pH Electrode | HI 73127 (replaceable; included) | |
| Environment | 0 to 50C (32 to 122F); RH max 100% | |
| Battery Type / Life |
4 x 1.5V / approx. 100 hours of continuous use; auto-off after 8 minutes of non-use |
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| Dimensions | 163 x 40 x 26 mm (6.4 x 1.6 x 1.0") | |
| Weight | 100 g (3.5 oz.) |
