Milwaukee, Ph58 Pocket-size pH / ORP / Temperature Meter
The Milwaukee pH58 MAX Waterproof 3-in-1 pH/ORP/Temp. The pH58 MAX Waterproof 3-in-1 tester is accurate to ±0.05 pH ‘ +/- 1000 mV ‘ +/-0.5°C (+/-1°F) and is easy to read. The pH58 MAX is waterproof to IP65.