Checker pH Tester - 0.1 pH Resolution - Hanna Instruments
Checker pH Tester - 0.1 pH Resolution - Hanna Instruments
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The HI98103 Checker pH Tester from Hanna Instruments is a pocket-sized direct-measurement pH meter built around simplicity and longevity. Single-button operation keeps the learning curve flat, and the large LCD is readable from any angle — useful when you're leaning over a sump or working in low-light utility areas. With ±0.2 pH accuracy and 0.1 pH resolution, it gives you a clear picture of where your water stands without the complexity of a full benchtop unit.
The onscreen stability indicator is one of the more practical features on a meter in this price range. Rather than guessing whether the reading has drifted or settled, the display tells you when the measurement has stabilized — which reduces operator error and gives you more confidence in the result. The replaceable electrode is equally important for long-term value: when the probe ages out, you swap the electrode rather than the entire meter.
Battery life is handled by a CR2032 lithium cell rated for up to 1,000 continuous hours of use. A low-battery icon blinks before the cell is fully depleted, so you won't be caught mid-test without power. The selectable auto-off feature provides additional insurance if the meter is accidentally left on between uses.
The HI98103 ships with calibration buffer solutions and batteries included, so it's ready to use out of the box. It suits reef and freshwater keepers who need a reliable spot-check tool and don't want to commit to a continuous monitoring system. Keep in mind that this is a manual, dip-and-read instrument — it is not a continuous monitor and should be recalibrated regularly with fresh buffer solution for best accuracy.
Overview
Simple. Accurate. Replaceable.
The HI98103 covers the essentials of pH spot-checking in a pocket-sized form factor — without unnecessary complexity.
Measurement
- 0.1 pH display resolution
- ±0.2 pH accuracy
- Onscreen stability indicator confirms settled readings
Usability
- Single-button operation for any experience level
- Large LCD readable from any angle
- Compact pocket-sized housing for on-the-go use
Longevity
- Replaceable electrode extends the life of the unit
- CR2032 battery rated up to 1,000 continuous hours
- Selectable auto-off prevents accidental battery drain
Features
Direct Submersion Measurement
The HI98103 is designed for direct measurement — the electrode is submerged directly into the sample. The onscreen stability indicator confirms when the reading has settled before you record a value.
Ready-to-Use Calibration Included
The HI98103 ships with calibration buffer solution packets so the meter can be calibrated and put into service immediately. Regular calibration with fresh buffer solution is recommended to maintain ±0.2 pH accuracy.
Specifications
HI98103 CHECKER pH TESTER
- Resolution
- 0.1 pH
- Accuracy
- ±0.2 pH
- Display
- Large LCD
- Battery
- CR2032 Li-ion
- Battery Life
- Up to 1,000 hours continuous use
- Auto-Off
- Selectable
- Electrode
- Replaceable