Description AZ Waterproof pH pens raise the bar in ease of use, reliability, function and price point. AZ meters provide a big IP65 LCD screen with dual pH and temperature display. Wide pH measuring range from 0 to 14 and a temperature range of -5°C to 60°C. Waterproof IP65 keypad with simple one touch auto calibration. Also includes a hold button to freeze current readings in low visibility. ATC (auto temperature compensation) ensures accurate readings in all climates. Auto off function maximizes battery life. Low cost pH pen Big LCD dual display Temp. & pH value with ATC One touch for auto-calibration Waterproof housing meets IP65 rating Automatic buffer recognition to avoid errors during calibration 0.08 x 0.2 x 0.05 metres (h x w x d)
