Elevate your water testing with theHanna Instruments HI98128 pHep®5, a high-precision, pocket-sized tester designed for professionals who demand laboratory-grade accuracy in the field. Combining a dual-level LCD, advanced automation, and a rugged, waterproof housing, the pHep®5 is the ultimate tool for hydroponics, brewing, environmental monitoring, and laboratory use.
Key Features
- Exceptional Accuracy & Resolution:Measure pH with a precision of±0.05 pHand a high resolution of0.01 pH. The expanded range covers -2.00 to 16.00 pH, ensuring versatility across various applications.
- Dual-Level LCD Display:View pH and temperature (°C or °F) simultaneously. The large screen also provides a battery percentage indicator at startup and a stability tag to let you know exactly when your reading is ready.
- Replaceable Electrode Cartridge:Unlike most pocket testers, the HI98128 features theHI73127 replaceable pH electrode. This cartridge design uses a sturdy stainless steel connector with no pins to break, significantly extending the life of your meter.
- Renewable Cloth Junction:The electrode features an extractable cloth junction. If the response time slows down due to clogging, simply pull out 1/8” of the junction to expose a fresh surface and restore the tester’s performance.
- Fully Waterproof & Floating:Designed to withstand the toughest environments, the housing is completely sealed against humidity and is engineered to float if accidentally dropped in a tank or vat.
- Advanced Automation:
- Automatic Calibration:Calibrate at 1, 2, or 3 points using two sets of memorized buffers (standard or NIST).
- Automatic Temperature Compensation (ATC):Integrated temperature sensor ensures all readings are adjusted for temperature fluctuations.
- Auto-Off Function:Preserves battery life by automatically shutting down after 8 minutes of non-use
Technical Specifications
| Feature | Details |
| pH Range | -2.00 to 16.00 pH |
| pH Resolution | 0.01 pH |
| pH Accuracy | ±0.05 pH |
| Temperature Range | -5.0 to 60.0°C / 23.0 to 140.0°F |
| Temp. Resolution | 0.1°C / 0.1°F |
| Temp. Accuracy | ±0.5°C / ±1.0°F |
| Calibration | Automatic, 1, 2, or 3 points |
| Battery Type | 1.5V (4) / approx. 300 hours of continuous use |
| Dimensions | 163 x 40 x 26 mm (6.4 x 1.6 x 1.0″) |
| Weight | 100 g (3.5 oz.) |
What’s in the Box?
Each HI98128 is supplied complete and ready to use:
- HI98128 (pHep®5) Tester
- HI73127 pH Electrode
- HI73128 Electrode Removal Tool
- 4 x 1.5V Batteries
- Instruction Manual
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Bonus:Calibration buffer sachets (pH 4.01 & 7.01) and cleaning/storage solution sachets.
Why Choose the pHep®5?
The HI98128 bridges the gap between basic pocket testers and expensive portable meters. It is the perfect choice for users who need a durable, high-resolution device that is easy to maintain and built to last.
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