- PROCEDURE:
- Keep all sensors of calibrator for temperature monitoring inside the BOD incubator chamber near to the existing inbuilt sensors of chamber as per the Format-I.
- Switch on the calibrator and observe the display for temperature.
- Calibrator should be standardized at ‘NIST’ or ‘ERTL’ or ‘NPL’ or ‘ETDC’ equivalent authorities and the traceability certificates shall be obtained.
- The calibration may be done by the external agency if required, as per the procedure mentioned in this SOP.
- Calibration duration shall be minimum of 4 hrs. for the set condition.
- Readings shall be taken with 15 minutes time intervals.
- Calibration shall be carried out on ±15 days, from the calibration due date.
- After the calibration record the results in calibration record as per the Format-II.
- Calibration Frequency: Once in year.
- Acceptance criteria: ± 1 0C for set temperature.
Note: Attach the data logger printouts with Format-I.
- ANNEXURES:
| ANNEXURE NO. | TITLE OF ANNEXURE |
| Annexure-I | Incubator layout for probe placement. |
| Annexure-II | Incubator Chambers Calibration Record |
- ABBREVIATIONS:
| No. | : | Number |
| SOP | : | Standard Operating Procedure |
| ERTL | : | Electronic Regional Testing Laboratory |
| NIST | : | National institute of standards and testing |
| NPL | : | National Physical Laboratory. |
| ETDC | : | Electronic Test & development Centre |
| QC | : | Quality Control |
Annexure-I
Incubator layout for probe placement
Annexure-II
Incubator Chambers Calibration Record
