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Combo pH/EC Tester low range EC
Hanna Instruments HI-98129 Pocket Combo EC/TDS and pH Tester — Low Range
The Hanna Instruments HI-98129 is a waterproof, multiparameter pocket tester offering high accuracy pH, conductivity (EC), total dissolved solids (TDS) and temperature measurements in a single meter. Designed for ease of use in both field and laboratory environments, the HI-98129 features a floating waterproof casing with tactile grip, a rubberised keyboard and a large LCD display showing pH and temperature simultaneously. The EC/TDS conversion factor and temperature compensation coefficient are both user selectable, making this a highly versatile instrument.
The HI-98129 features a replaceable HI 73127 pH electrode with a sturdy snap-in connector — no pins to bend or break — alongside a graphite EC/TDS electrode that cannot be contaminated by salt deposits, ensuring greater accuracy and longer service life. Automatic temperature compensation is applied to both pH and EC/TDS readings, and pH calibration is automatic at one or two points calibrating directly into Hanna buffer solution sachets. The BEPS Battery Error Prevention System protects against inaccurate readings caused by low battery power.
Key Features
- Measures pH, EC, TDS and temperature in a single waterproof meter
- Large LCD display — pH and temperature shown simultaneously
- Replaceable HI 73127 pH electrode with snap-in connector — no pins to bend or break
- Graphite EC/TDS electrode — resistant to salt deposit contamination for greater accuracy
- Automatic temperature compensation for both pH and EC/TDS
- Automatic 1 or 2 point pH calibration direct into buffer solution sachets
- User selectable EC/TDS conversion factor (0.45 to 1.00) and temperature compensation coefficient
- BEPS Battery Error Prevention System
- Floating waterproof casing with tactile grip and rubberised keyboard
- HOLD function and easy Celsius/Fahrenheit switching
- Auto-off after 8 minutes of non-use
Typical Applications
- Drinking water testing
- Water conditioning and reverse osmosis
- Cooling towers and waste water
- Laboratories
- Agriculture, aquaculture and hydroponics
Product Specifications
| Model | HI-98129 |
|---|---|
| pH Range | 0.00 to 14.00 pH |
| pH Resolution | 0.01 pH |
| pH Accuracy | ±0.05 pH |
| pH Calibration | Automatic, 1 or 2 points — memorised buffers pH 4.01 / 7.01 / 10.01 or pH 4.01 / 6.86 / 9.18 |
| pH Electrode | HI 73127 (replaceable, included) |
| EC Range | 0 to 3999 µS/cm |
| EC Resolution | 1 µS/cm |
| TDS Range | 0 to 2000 mg/L (ppm) |
| TDS Resolution | 1 ppm |
| EC/TDS Accuracy | ±2% F.S. |
| EC/TDS Calibration | Automatic, 1 point |
| TDS Conversion Factor | Adjustable 0.45 to 1.00 |
| Temperature Range | 0.0 to 60.0°C (32 to 140.0°F) |
| Temperature Resolution | 0.1°C / 0.1°F |
| Temperature Accuracy | ±0.5°C / ±1°F |
| Temperature Compensation | pH: automatic — EC/TDS: automatic with β adjustable 0.0–2.4% /°C |
| Battery Type / Life | 4 x 1.5V — approx. 100 hours continuous use; auto-off after 8 minutes |
| Operating 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 1.0") |
| Weight | 100g (3.5 oz.) |
| Supplied With | HI 73127 pH electrode, HI 73128 electrode removal tool, batteries, instructions |
| Datasheets | |
|---|---|
 | EC Tester Manual.pdf |
