CoZroom Pocket Size pH Meter with ATC and Backlit LCD, 0.05pH High Accuracy, 0-14 pH Measurement Range, 0.01 Resolution Handheld, Measure Household Drinking Water(Red)


Steps:
1: Turn on pH meter, Clean the electrode in distill water
2: Immerse the electrode in pH 6.86 standard buffer solution
3: Reset with screwdriver, until the display digital is 6.86pH. Then complete pH 6.86 calibration
4: Clean the electrode in distill water and dry it, immerse the electrode in Ph 4.00 standard buffer solution
5: Reset with screwdriver, until the display digital is 4.00pH. Then complete pH 4.00 calibration
6: Clean electrode and dry it, put the meter into PH 9.18 standard buffer solution. Check if reading is correct between 9.17-9.19pH
Specifications :
Measuring range: 1-14 pH
Resolution: 0.1 PH
Batteries: 4x 1.5V LR44 button cell (AG13)
Adjustment: trimmer potentiometer
Automatic temperature compensation: 0-50°C (32-122°F)
Dimensions: 151mm-33mm-20mm
Weight: 53g
Package includes :
1 x pH Meter
1 x Carrying case
1 x Adjustment screwdriver
2 x Calibration packets
1 x User's manual