Hanna Instruments
Hanna Instruments HI98107 pHep pH Tester
$64.99Cheaper
Best Ph Meters · head-to-head
Hanna Instruments HI98107 pHep pH Tester vs Oakton pHTestr 10 Waterproof BNC Pocket pH Tester (WD-35634-14)
A sourced, side-by-side comparison. Hanna Instruments HI98107 pHep pH Tester is cheaper at $64.99. Every spec and price links to its source.
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Oakton Instruments
Oakton pHTestr 10 Waterproof BNC Pocket pH Tester (WD-35634-14)
$169.3
Which is better: the Hanna Instruments HI98107 pHep pH Tester or Oakton pHTestr 10 Waterproof BNC Pocket pH Tester (WD-35634-14)?
On the specs we track, they're closely matched. The Hanna Instruments HI98107 pHep pH Tester is the cheaper at $64.99.
See Hanna Instruments HI98107 pHep pH Tester on Amazon Check Oakton pHTestr 10 Waterproof BNC Pocket pH Tester (WD-35634-14) price
As an Amazon Associate we earn from qualifying purchases. Prices verified at capture; live price may differ.
Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| 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 |
| Released | — | — |
| 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 | — |
Sources — Hanna Instruments HI98107 pHep pH Tester: hannainst.com (verified 2026-08-12). Oakton pHTestr 10 Waterproof BNC Pocket pH Tester (WD-35634-14): amazon.com (verified 2026-08-12).
What's the difference between the Hanna Instruments HI98107 pHep pH Tester and Oakton pHTestr 10 Waterproof BNC Pocket pH Tester (WD-35634-14)?
Where the two actually differ on the specs we track (3 of 8). Matching specs are omitted.
- 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