# Milwaukee Instruments MW102 PRO+ 2-in-1 pH and Temperature Meter vs Extech PH100 ExStik II Waterproof pH Meter: specs and price compared

A sourced, side-by-side comparison of the Milwaukee Instruments MW102 PRO+ 2-in-1 pH and Temperature Meter (Milwaukee Instruments) and Extech PH100 ExStik II Waterproof pH Meter (Extech Instruments) among ph meters.

## Side by side

| Spec | Milwaukee Instruments MW102 PRO+ 2-in-1 pH and Temperature Meter | Extech PH100 ExStik II Waterproof pH Meter |
| --- | --- | --- |
| US price | not published | $124 |
| Brand | Milwaukee Instruments | Extech Instruments |
| Ph range | -2.00 to 16.00 pH | 0.00 to 14.00 pH |
| Resolution ph | 0.01 pH | 0.01 pH |
| Accuracy ph | ±0.02 pH | ±0.01 pH |
| Calibration points | Automatic, 1 or 2 points | — |
| Atc | Automatic, 0 to 70°C | Yes, automatic |
| Electrode type | SE220 gel-filled double-junction lab-grade pH electrode + MA831R temperature probe (both included) | Flat-surface electrode (rated for liquids, semi-solids, and solids) |
| Waterproof rating | — | IP57 |
| Battery type | 1 x 9V, approx. 300 hours continuous use | 4 x CR2032 3V button cell |

## Key differences

- Ph range: Milwaukee Instruments MW102 PRO+ 2-in-1 pH and Temperature Meter -2.00 to 16.00 pH vs Extech PH100 ExStik II Waterproof pH Meter 0.00 to 14.00 pH
- Accuracy ph: Milwaukee Instruments MW102 PRO+ 2-in-1 pH and Temperature Meter ±0.02 pH vs Extech PH100 ExStik II Waterproof pH Meter ±0.01 pH
- Atc: Milwaukee Instruments MW102 PRO+ 2-in-1 pH and Temperature Meter Automatic, 0 to 70°C vs Extech PH100 ExStik II Waterproof pH Meter Yes, automatic
- Electrode type: Milwaukee Instruments MW102 PRO+ 2-in-1 pH and Temperature Meter SE220 gel-filled double-junction lab-grade pH electrode + MA831R temperature probe (both included) vs Extech PH100 ExStik II Waterproof pH Meter Flat-surface electrode (rated for liquids, semi-solids, and solids)
- Battery type: Milwaukee Instruments MW102 PRO+ 2-in-1 pH and Temperature Meter 1 x 9V, approx. 300 hours continuous use vs Extech PH100 ExStik II Waterproof pH Meter 4 x CR2032 3V button cell

## Sources

- Milwaukee Instruments MW102 PRO+ 2-in-1 pH and Temperature Meter: https://milwaukeeinstruments.eu/milwaukee-mw102-pro-ph-meter-with-temperature-probe (milwaukeeinstruments.eu, verified 2026-08-12)
- Extech PH100 ExStik II Waterproof pH Meter: https://www.extech.com/products/PH100 (extech.com, verified 2026-08-12)

Canonical: https://frontdeskreview.com/gear/ph-meters/milwaukee-mw102-vs-extech-ph100/
Cite: Per The Front Desk Review, Milwaukee Instruments MW102 PRO+ 2-in-1 pH and Temperature Meter (not published) vs Extech PH100 ExStik II Waterproof pH Meter ($124) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/ph-meters/milwaukee-mw102-vs-extech-ph100/
License: CC BY 4.0.