# Hanna Instruments HI98107 pHep pH Tester vs Oakton pHTestr 10 Waterproof BNC Pocket pH Tester (WD-35634-14): specs and price compared

A sourced, side-by-side comparison of the Hanna Instruments HI98107 pHep pH Tester (Hanna Instruments) and Oakton pHTestr 10 Waterproof BNC Pocket pH Tester (WD-35634-14) (Oakton Instruments) among ph meters. Hanna Instruments HI98107 pHep pH Tester is the cheaper of the two at $64.99.

## Side by side

| Spec | Hanna Instruments HI98107 pHep pH Tester | Oakton pHTestr 10 Waterproof BNC Pocket pH Tester (WD-35634-14) |
| --- | --- | --- |
| US price | $64.99 | $169.3 |
| Brand | Hanna Instruments | Oakton Instruments |
| Ph range | 0.0 to 14.0 pH | — |
| Resolution ph | 0.1 pH | — |
| Accuracy ph | ±0.1 pH at 25°C/77°F (Hanna's own spec table separately lists ±0.2 pH; the narrative accuracy claim ±0.1 pH is used here) | — |
| Calibration points | Automatic, 1 or 2-point, using standard buffers 4.01/7.01/10.01 | Three-point, push-button calibration with auto-buffer recognition |
| Atc | Automatic, 0 to 50°C | — |
| Electrode type | Cloth-junction pH electrode (larger surface area than a standard ceramic junction) | Replaceable BNC pH probe |
| Waterproof rating | Waterproof; rated to RH 100% max, 0 to 50°C | IP67 |
| Battery type | 1 x CR2032 3V lithium, approx. 1000 hours continuous use | — |

## Key differences

- Calibration points: Hanna Instruments HI98107 pHep pH Tester Automatic, 1 or 2-point, using standard buffers 4.01/7.01/10.01 vs Oakton pHTestr 10 Waterproof BNC Pocket pH Tester (WD-35634-14) Three-point, push-button calibration with auto-buffer recognition
- Electrode type: Hanna Instruments HI98107 pHep pH Tester Cloth-junction pH electrode (larger surface area than a standard ceramic junction) vs Oakton pHTestr 10 Waterproof BNC Pocket pH Tester (WD-35634-14) Replaceable BNC pH probe
- Waterproof rating: Hanna Instruments HI98107 pHep pH Tester Waterproof; rated to RH 100% max, 0 to 50°C vs Oakton pHTestr 10 Waterproof BNC Pocket pH Tester (WD-35634-14) IP67

## Sources

- Hanna Instruments HI98107 pHep pH Tester: https://www.hannainst.com/hi98107-phep-ph-tester.html (hannainst.com, verified 2026-08-12)
- Oakton pHTestr 10 Waterproof BNC Pocket pH Tester (WD-35634-14): https://www.amazon.com/Oakton-WD-35634-14-Waterproof-pHTestr-Pocket/dp/B012BSBPFW/ (amazon.com, verified 2026-08-12)

Canonical: https://frontdeskreview.com/gear/ph-meters/hanna-hi98107-vs-oakton-phtestr-10/
Cite: Per The Front Desk Review, Hanna Instruments HI98107 pHep pH Tester ($64.99) vs Oakton pHTestr 10 Waterproof BNC Pocket pH Tester (WD-35634-14) ($169.3) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/ph-meters/hanna-hi98107-vs-oakton-phtestr-10/
License: CC BY 4.0.