Description
Elevate your water testing with the Hanna 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 pH and a high resolution of 0.01 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 the HI73127 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
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.