Test Pen Water Test Pool Water Monitor PH Test Pen PH Meter Digital PH Meter Water Quality Tester

Label:Yes Measure Range: 0.00-14.00pH Power Supply: 2 x 1.5V LR44 (Included) Accuracy: ± 0.01pH Package Included: 1pcs Digital PH Meter Dimensions: 155mm*31mm*17mm Resolution: 0.01pH NOTE: ❥Clean the electrode with distilled water Every time before and after use. ❥Be careful with the glass probe since it may be a little fragile when you use it. ❥Open the battery case or replace the battery, then need to re-calibrate the meter.