Instrument calibration protocol for Hardness Tester
| Code No. | |
| Frequency | 180 days ± 7 days |
| Model No. | Multitest 50 |
| Make | Sotex |
| Date of Calibration | |
| Next due date |
Hardness Calibration
| Standard Weight | Difference | Limit in Kg | Done by | Checked by | Remarks |
| 5.0 Kg | ± 0.1 Kg |
Remarks: Calibration Satisfactory / Not Satisfactory
Calibrated By (Sign/ Date)
Checked By (Sign/ Date)