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The HI98131 is a slim, lightweight, and waterproof pocket tester that measures pH, conductivity (EC), TDS (ppm), and temperature. Simple, two-button meter operation and advanced features, including a selectable EC to TDS conversion factor (0.5 - 500 ppm and 0.7 - 700 ppm). for your essential testing.
| sku | HI98131 |
| pH Range | 0.00 to 14.00 pH |
| pH Resolution | 0.01 pH |
| pH Accuracy @ 25°C / 77°F | ±0.10 pH |
| pH Calibration | automatic, one or two-point calibration (using pH 4.01, 7.01, 10.01 buffers) one point calibration using HI50036 Quick Cal pH and EC one-point calibration solution |
| Temperature Range | 0.0 to 60.0 °C (32.0 to 140.0 °F) |
| Temperature Resolution | 0.1 °C (0.1 °F) |
| Temperature Accuracy @ 25°C / 77°F | ±0.5 °C (±1.0 °F) |
| EC Range | 0.00 to 6.00 mS/cm |
| EC Resolution | 0.01 mS/cm |
| EC Accuracy @25°C/77°F | ±2% F.S. |
| EC Calibration | automatic, one-point at 1.41 mS/cm or 5.00 mS/cm one point calibration using Quick Cal pH and EC one-point calibration solution |
| TDS Range | 0 to 3000 ppm (0.5 CF) 0 to 3999 ppm (0.7 CF) |
| TDS Resolution | 10 ppm (mg/L) |
| TDS Accuracy @ 25°C / 77°F | ±2% F.S. |
| TDS Conversion Factor | 0.5 (500 ppm) or 0.7 (700 ppm |
| Temperature Compensation | pH: automatic |
| EC: automatic, with β | 1.9%/°C |
| Power Supply | 1.5V batteries (4 pcs.) |
| Power Consumption | approximately 100 hours of continuous use |
| 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 1.0in.) |
| Weight | 95 g (3.4 oz) |
| Ordering Information | HI98131 is supplied with HI73127 pH electrode, HI73128 electrode removal tool, batteries (4), instructions and quality certificate. |
| Warranty | This meter is warranted for a period of one year against defects in workmanship and materials when used for their intended purpose and maintained according to instructions. The electrode is warranted for a period of six months. |


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