The HI98129 is an easy-to-use and accurate waterproof pH, conductivity, TDS (ppm) tester. It measures pH, EC in the low range (0 to 3999 µS/cm), TDS (0 to 2000 ppm), and temperature. This floating, waterproof combination pocket tester has an easy to read, LCD and an automatic shut-off. All pH, EC, and TDS (ppm) readings are automatically temperature compensated (ATC) to prevent temperature-related variations in your measurements. For EC and TDS (ppm) readings, the EC/TDS conversion factor (CONV) is selectable by the user, as well as the temperature compensation coefficient β (BETA).
Replaceable pH Electrode Cartridge
The HI98129 tester features an easy to replace pH electrode cartridge with an extendable cloth junction. The extendable cloth junction helps increase electrode life and the replaceable pH cartridge means that this tester does not need to be thrown away when the pH sensor is exhausted. Also, the sturdy, snap-in connector means there are no pins to bend or break!
High Accuracy EC and TDS (ppm) Tester Probe
The graphite conductivity probe provides greater accuracy because it cannot be contaminated by salt deposits in the solution. The exposed temperature sensor provides fast response times and guarantees highly accurate temperature compensated readings.
|pH Range||0.0 to 14.0 pH|
|pH Resolution||0.1 pH|
|pH Accuracy (@25°C/77°F)||±0.1 pH|
|pH Calibration||Manual, one point|
|pH Temperature Compensation||Automatic for pH readings|
|EC Range||0 to 3999 μS/cm|
|EC Resolution||1 μS/cm|
|EC Accuracy||±2% F.S.|
|TDS Range||0 to 2000 mg/L (ppm)|
|TDS Resolution||1 mg/L (ppm)|
|TDS Accuracy||±2% F.S.|
|TDS Calibration||Automatic, one point at 1413 μS/cm or 1382 mg/L (ppm)|
|Temperature Correction Coefficient||Automatic with у adjustable from 0.0 to 2.4% / °C|
|EC to TDS Conversion Factor||0.45 to 1.00|
|Temperature Range||-5.0 to 60.0°C / 23.0 to 140.0°F|
|Temperature Resolution||0.1°C / 0.1°F|
|Temperature Accuracy||±0.5°C /±1°F|
|pH Electrode||HI73127 (replaceable; included)|
|Automatic Shut-Off||Auto-off after 8 minutes of non-use|
|Battery Type / Life||1.5V (4) / approximately 250 hours of continuous use|
|Environment||-5 to 50°C (23 to 122°F); RH max 100%|
|Dimensions||163 x 40 x 26 mm (6.4 x 1.6 x 1.0")|
|Weight||100 g (3.5 oz.)|
|Lead Time||Ships in 1-2 Weeks|
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