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Extech Instruments
Extech PH100 ExStik II Waterproof pH Meter
$124Cheaper
Best Ph Meters · head-to-head
Extech PH100 ExStik II Waterproof pH Meter vs Oakton pHTestr 10 Waterproof BNC Pocket pH Tester (WD-35634-14)
A sourced, side-by-side comparison. Extech PH100 ExStik II Waterproof pH Meter is cheaper at $124. 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 Extech PH100 ExStik II Waterproof pH Meter or Oakton pHTestr 10 Waterproof BNC Pocket pH Tester (WD-35634-14)?
On the specs we track, they're closely matched. The Extech PH100 ExStik II Waterproof pH Meter is the cheaper at $124.
See Extech PH100 ExStik II Waterproof pH Meter 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 | Extech PH100 ExStik II Waterproof pH Meter | Oakton pHTestr 10 Waterproof BNC Pocket pH Tester (WD-35634-14) |
|---|---|---|
| US price | $124 | $169.3 |
| Brand | Extech Instruments | Oakton Instruments |
| Released | — | — |
| Ph range | 0.00 to 14.00 pH | — |
| Resolution ph | 0.01 pH | — |
| Accuracy ph | ±0.01 pH | — |
| Calibration points | — | Three-point, push-button calibration with auto-buffer recognition |
| Atc | Yes, automatic | — |
| Electrode type | Flat-surface electrode (rated for liquids, semi-solids, and solids) | Replaceable BNC pH probe |
| Waterproof rating | IP57 | IP67 |
| Battery type | 4 x CR2032 3V button cell | — |
Sources — Extech PH100 ExStik II Waterproof pH Meter: extech.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 Extech PH100 ExStik II Waterproof pH Meter and Oakton pHTestr 10 Waterproof BNC Pocket pH Tester (WD-35634-14)?
Where the two actually differ on the specs we track (2 of 8). Matching specs are omitted.
- Electrode type: Extech PH100 ExStik II Waterproof pH Meter Flat-surface electrode (rated for liquids, semi-solids, and solids) vs Oakton pHTestr 10 Waterproof BNC Pocket pH Tester (WD-35634-14) Replaceable BNC pH probe
- Waterproof rating: Extech PH100 ExStik II Waterproof pH Meter IP57 vs Oakton pHTestr 10 Waterproof BNC Pocket pH Tester (WD-35634-14) IP67