Extech Instruments · Updated August 2026
Extech PH100 ExStik II Waterproof pH Meter: price & specs
Extech PH100 ExStik II Waterproof pH Meter. Every price and spec below is linked to its source and dated — no guesses.
Source: extech.com verified verify in ledger
Is the Extech PH100 ExStik II Waterproof pH Meter a good buy?
At $124, the Extech PH100 ExStik II Waterproof pH Meter is #6 cheapest of the 11 ph meters we track, where the median is $124.
Specifications
| Price (US) | $124 Current Amazon retail price; extech.com does not display direct consumer pricing on its own product page |
|---|---|
| Brand | Extech Instruments |
| Released | — |
| Ph range | 0.00 to 14.00 pH |
| Resolution ph | 0.01 pH |
| Accuracy ph | ±0.01 pH |
| Calibration points | — |
| Atc | Yes, automatic |
| Electrode type | Flat-surface electrode (rated for liquids, semi-solids, and solids) |
| Waterproof rating | IP57 |
| Battery type | 4 x CR2032 3V button cell |
Source: extech.com (verified 2026-08-12). Extech's own PH100 product page confirms range, resolution, accuracy, ATC, flat-surface electrode, IP57 rating, and 4x CR2032 battery configuration; it lists a "CAL alert" feature but never states the number of calibration points, so that field is left null. Price ($124.00) is not published on extech.com itself and is taken from the current Amazon listing for the identical PH100 ExStik II kit.
Is the Extech PH100 ExStik II Waterproof pH Meter worth it vs cheaper ph meters?
Extech PH100 ExStik II Waterproof pH Meter against its closest cheaper and pricier ph meters on the specs that matter — every value sourced. See all 11 ranked
| Product | Price | Ph range | Resolution ph | Accuracy ph | Atc | Electrode type |
|---|---|---|---|---|---|---|
| Extech PH100 ExStik II Waterproof pH Meter this | $124 | 0.00 to 14.00 pH | 0.01 pH | ±0.01 pH | Yes, automatic | Flat-surface electrode (rated for liquids, semi-solids, and solids) |
| Apera Instruments PH60 Premium Series Waterproof Pocket pH Tester | $110 | -2.00 to 16.00 pH | 0.01 / 0.1 pH (selectable) | ±0.01 pH ±1 digit | Automatic, 0 to 50°C (32 to 122°F) | Replaceable single-junction ceramic pH probe, lead-free lithium-based glass bulb membrane, Ag/AgCl reference, KCl gel electrolyte |
| Oakton pHTestr 10 Waterproof BNC Pocket pH Tester (WD-35634-14) | $169.3 | — | — | — | — | Replaceable BNC pH probe |
Frequently asked questions
How much does the Extech PH100 ExStik II Waterproof pH Meter cost?
The Extech PH100 ExStik II Waterproof pH Meter has a US price of $124 (Current Amazon retail price; extech.com does not display direct consumer pricing on its own product page), as of 2026-08-12.
How does the Extech PH100 ExStik II Waterproof pH Meter compare on price?
At $124, the Extech PH100 ExStik II Waterproof pH Meter is #6 cheapest of the 11 ph meters we track, where the median is $124.
What are the Extech PH100 ExStik II Waterproof pH Meter's key specs?
Extech PH100 ExStik II Waterproof pH Meter (Extech Instruments): ph range 0.00 to 14.00 pH, resolution ph 0.01 pH, accuracy ph ±0.01 pH, atc Yes, automatic, electrode type Flat-surface electrode (rated for liquids, semi-solids, and solids). Full sourced spec sheet verified 2026-08-12.
Price of record: $124 at extech.com, 2026-08-12. Other retailers may be lower — check the current price:
See Extech PH100 ExStik II Waterproof pH Meter on Amazon As an Amazon Associate we earn from qualifying purchases.Similar ph meters
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Step up
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