Instrument Calibration Protocol of pH Meter
| Instrument: pH Meter |
| Instrument Code Number: |
| Refer Operating SOP No.: |
| Model No.: |
| Date. of calibration: |
| Next due date: |
| Sr. No. | Buffer Sol. Name | Batch no./Lot no. | Valid upto |
| 1. | pH: 1.68 | ||
| 2. | pH: 4.01 | ||
| 3. | pH: 7.00 | ||
| 4. | pH: 9.00 | ||
| 5. | pH: 12.45 |
Calibration using standard buffer solution
| Date | pH : 1.68 Limit : 1.63 to 1.73 | pH : 4.01 Limit : 3.96 to 4.06 | pH : 7.00 Limit : 6.95 to 7.05 | pH : 9.00 Limit : 8.95 to 9.05 | pH : 12.45 Limit : 12.40 to 12.50 | Slope (92.0 % -102.0 %) |
Conclusion: Calibration found satisfactory/ not satisfactory.
Calibrated By (Sign/ Date)
Checked By (Sign/ Date)