Economic pen pH meter AZ8686 / AZ8685 / AZ8684

Economic pen pH meter (pen PH meter, PH tester, pH meter) Model: AZ8686 / AZ8685 / AZ8684 Instrument: economic pen pH meter dual screen can display temperature and pH value (8685/8686) Temperature Compensation function easy to operate with a three-point automatic calibration function automatically compensates for IP67 waterproof / identify the solution temperature to avoid uncorrectable error data retention capabilities, automatic shutdown can be lifted specifications: Measuring range PH: 2 ~ 12 (8684), 0 ~ 14pH (8686/8685) Temperature: 0 ~ 50 ℃ (8686/8685) Accuracy ± 1 ℃ Resolution 0.1pH (8684/8685), 0.01pH (8686) Accuracy ± 0.3pH (8684), 0.2pH (8685), 0.05pH (8686 ) Dimensions 165x35x32mm accessories batteries, manual, paper