VIVOSUN PH Meter Digital PH Tester Pen for Water

Color:yellow VIVOSUN Digital pH Meter Tester Pen helps to measure acidity or alkalinity easily and accurately. How to use? Step 1: Remove the protective cap Step 2: Clean the electrode in distilled water and dry it Step 3: Turn the meter on by pressing the ON/OFF key Step 4: Immerse the pH meter electrode in the solution to be tested Step 5: Stir gently and wait for the display stabilizes Step 6: After finished, clean the electrode in distilled water and turn the meter off by pressing the ON/OFF key Tip 1. Don't touch the electrode by hard tools or fingers. Always replace the protective cap to keep electrode from drying out. 2. Clean the electrode every time before and after using. 3. When the meter cannot be turned on or the display fades, open the battery case and replace battery (pay attention to the polarity), then need to recalibrate the meter. Specifications Range:0.00-14.00 pH Resolution: 0.01 pH Accuracy: 0.01 pH Batteries: 2 X 1.5V Environment: 0?-80? (32?-176?) Dimensions: 15.5 x 2.9 x 1.6 cm Weight: 50g