Quality may be compromised if purchased from other seller
Specification: Large LCD 2.6 x 1.3 cm
Measure range 0.00pH - 14.00pH
Resolution: 0.01pH
Accuracy: +/- 0.01pH
Power supply: 2 x 1.5V (keep using more than 500 hours)
Operating temperature: 0° - 80° ?
Calibration: three points automatic calibration
Dimension: 153mm x 28mm x 14mm
Weight: 56g
No screwdriver needed
Calibration: Turn on pH meter
Immerse the electrode in pH 6.86 standard buffer solution (under the temperature of 25 ?)
After digit stabilized, press the "CAL" button for 5 seconds (the instrument comes into the automatic calibration status) wait until the display digit is 6.86 pH, then complete pH 6.86 point calibration
Clean the electrode with distilled water and dry it filter paper, immerse the electrode in pH 4.00 standard buffer solution
After digit stabilized, press "CAL" button for 5 seconds, wait until the digit is 4.00 pH, complete the pH 4.00 point calibration
Clean the electrode with distilled water and wipe clean the spare water, put the electrode in the pH 9.18 standard solution until the date stable, the data will be in 9.17pH - 9.19pH, the data is in the range of allowable error
This instrument calibration work is completed after all steps
