APERA INSTRUMENTS AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy
- Easy auto. calibration with buffer recognition.
- auto. temp. compensation (ATC) ensures accuracy in various temperatures (32 to 122F).
- Backed by Apera quality pH sensor with low impedance, ensuring high response rate.
- Comes in a rugged carrying case with pH 4&7 buffers and a lanyard.
- Auto recognition of stable values improves consistency, so you don't have to guess when to manually hold measurement.
- Up to 2000 hours' continuous operation, powered by AAA batteries.