APERA INSTRUMENTS AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy
- 1–3 point automatic pH calibration
- Auto. buffer recognition and reminder of stable readings (smiley face icon)
- Automatic Temperature Compensation from 0 to 50˚C (32–122˚F)
- Ready-to-use bottled calibration solutions included in the kit
- Batteries : 4 AAA batteries required. (included)