Hanna Instruments HI98128 pHep 5pH/Temperature Tester
- pH range -2.00 to 16.00, resolution 0.01
- pH accuracy plus or minus 0.05
- Temperature -5.0 to 60.0 C, plus or minus 0.5 C
- Automatic calibration at 1 or 2 points, **ATC**
- Floating, water-resistant housing, dual-line LCD
- 100 g, 163 x 40 x 26 mm
- Batteries listed as 4 CR2 and as 4 AA
Last refreshed Oct 3, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A compact pH and temperature tester with automatic calibration, a replaceable electrode and a housing that floats. The listing names two different battery types, so check which one it takes.
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ASIN: B0085WV6GMModel: HI 98128Category: pH Meters
Overview
In a wine cellar, a lab bench or a field kit, this pocket tester shows pH and temperature together on a dual-line LCD. The electrode cartridge is replaceable, and the sealed housing floats if it falls in water.
Automatic calibration, a hold function and a replaceable electrode are the reasons to consider it for routine pH work. Power is the one oddity, with conflicting battery information in the specs and description.
Who it's for
Researchers, brewers, winemakers and water testers who want a floating tester with a replaceable electrode. Buyers who need a dissolved oxygen or conductivity meter should look elsewhere.
Pros and cons
- Automatic calibration at one or two points
- Replaceable electrode cartridge
- Hold function freezes readings
- Housing floats and is water-resistant
- Battery type listed inconsistently
- Measures pH and temperature only
- Electrode eventually needs replacing
Performance notes
The meter calibrates itself against buffer solutions, with two sets of standard buffers supported, and compensates for sample temperature automatically. Both pH and temperature show on the display at once, and the hold function freezes a value for recording. The tester turns itself off after eight minutes of inactivity to save the batteries.
Specifications
| Brand | Hanna Instruments |
|---|---|
| Model | HI 98128 |
| Dimensions & fit | |
| Dimensions | 163 x 40 x 26 mm |
| Weight | 100 g |
| Capacity & performance | |
| pH range | -2.00 to 16.00 |
| Temperature range | -5.0 to 60.0 C |
| Temperature compensation | Automatic (ATC) |
| Temperature accuracy | plus or minus 0.5 C |
| Operating temperature | -5 to 50 C |
| Included components | |
| Included Components | pH electrode, electrode removal tool, instructions |
| Other details | |
| Display | Dual-line LCD |
| pH resolution | 0.01 |
| pH accuracy | plus or minus 0.05 |
| Calibration | Automatic, 1 or 2 points |
| Batteries | Listed as 4 CR2 and as four 1.5 V AA |
Closest rivals on specs
Frequently asked questions
Does the Hanna pHep 5 measure conductivity or TDS?
No. It measures pH and temperature.
What batteries does the Hanna HI98128 use?
The spec field says 4 CR2 batteries, while the description says four 1.5 V AA batteries giving about 300 hours of use. Confirm with the seller.
What buffers does the Hanna HI98128 calibrate with?
Automatic calibration at one or two points with pH 4.01/7.01/10.01 or pH 4.01/6.86/9.18 standard buffers.
Does the Hanna HI98128 come with an electrode?
Yes. It comes with a HI 73127 pH electrode, an electrode removal tool and instructions.