How to use Pen Type pH Meter- pH-009 (I) A
Remove the protective cap
First clean the electrode with distilled water (available in most grossary stores), and dry it with filter paper
Turn on pH meter by “ON-OFF” switch located on the top of battery case
Immerse the pH meter electrode in solution up to the immersion level. Under no circumstances immerse above display level.
Stir gently and wait for the reading to stabilize.
After use, switch off the pH meter. Use distilled water to clean the electrode, dry it with filter paper and replace the protective cap

Measurement Range: 0.00 – 14.00 pHResolution: 0.01 pHAccuracy: ± 0.05 pHPower Supply: 2 x 1.5V LR44 button cell batteriesCalibration: Automatic two-point calibration