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Apera Instruments
Apera Instruments PH60 Premium Series Waterproof Pocket pH Tester
$110Cheaper
Best Ph Meters · head-to-head
Apera Instruments PH60 Premium Series Waterproof Pocket pH Tester vs Extech PH100 ExStik II Waterproof pH Meter
A sourced, side-by-side comparison. Apera Instruments PH60 Premium Series Waterproof Pocket pH Tester is cheaper at $110. Every spec and price links to its source.
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Extech Instruments
Extech PH100 ExStik II Waterproof pH Meter
$124
Which is better: the Apera Instruments PH60 Premium Series Waterproof Pocket pH Tester or Extech PH100 ExStik II Waterproof pH Meter?
On the specs we track, they're closely matched. The Apera Instruments PH60 Premium Series Waterproof Pocket pH Tester is the cheaper at $110.
See Apera Instruments PH60 Premium Series Waterproof Pocket pH Tester on Amazon See Extech PH100 ExStik II Waterproof pH Meter on Amazon
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Apera Instruments PH60 Premium Series Waterproof Pocket pH Tester | Extech PH100 ExStik II Waterproof pH Meter |
|---|---|---|
| US price | $110 | $124 |
| Brand | Apera Instruments | Extech Instruments |
| Released | — | — |
| Ph range | -2.00 to 16.00 pH | 0.00 to 14.00 pH |
| Resolution ph | 0.01 / 0.1 pH (selectable) | 0.01 pH |
| Accuracy ph | ±0.01 pH ±1 digit | ±0.01 pH |
| Calibration points | Automatic, 1 to 3 points; auto-recognizes buffers 1.68, 4.00, 7.00, 10.01, 12.46 | — |
| Atc | Automatic, 0 to 50°C (32 to 122°F) | Yes, automatic |
| Electrode type | Replaceable single-junction ceramic pH probe, lead-free lithium-based glass bulb membrane, Ag/AgCl reference, KCl gel electrolyte | Flat-surface electrode (rated for liquids, semi-solids, and solids) |
| Waterproof rating | IP67, floats | IP57 |
| Battery type | 4 x AAA (DC3V), up to 2000 hours continuous use | 4 x CR2032 3V button cell |
Sources — Apera Instruments PH60 Premium Series Waterproof Pocket pH Tester: aperainst.com (verified 2026-08-12). Extech PH100 ExStik II Waterproof pH Meter: extech.com (verified 2026-08-12).
What's the difference between the Apera Instruments PH60 Premium Series Waterproof Pocket pH Tester and Extech PH100 ExStik II Waterproof pH Meter?
Where the two actually differ on the specs we track (7 of 8). Matching specs are omitted.
- Ph range: Apera Instruments PH60 Premium Series Waterproof Pocket pH Tester -2.00 to 16.00 pH vs Extech PH100 ExStik II Waterproof pH Meter 0.00 to 14.00 pH
- Resolution ph: Apera Instruments PH60 Premium Series Waterproof Pocket pH Tester 0.01 / 0.1 pH (selectable) vs Extech PH100 ExStik II Waterproof pH Meter 0.01 pH
- Accuracy ph: Apera Instruments PH60 Premium Series Waterproof Pocket pH Tester ±0.01 pH ±1 digit vs Extech PH100 ExStik II Waterproof pH Meter ±0.01 pH
- Atc: Apera Instruments PH60 Premium Series Waterproof Pocket pH Tester Automatic, 0 to 50°C (32 to 122°F) vs Extech PH100 ExStik II Waterproof pH Meter Yes, automatic
- Electrode type: Apera Instruments PH60 Premium Series Waterproof Pocket pH Tester Replaceable single-junction ceramic pH probe, lead-free lithium-based glass bulb membrane, Ag/AgCl reference, KCl gel electrolyte vs Extech PH100 ExStik II Waterproof pH Meter Flat-surface electrode (rated for liquids, semi-solids, and solids)
- Waterproof rating: Apera Instruments PH60 Premium Series Waterproof Pocket pH Tester IP67, floats vs Extech PH100 ExStik II Waterproof pH Meter IP57
- Battery type: Apera Instruments PH60 Premium Series Waterproof Pocket pH Tester 4 x AAA (DC3V), up to 2000 hours continuous use vs Extech PH100 ExStik II Waterproof pH Meter 4 x CR2032 3V button cell