SOP for Calibration of Dry Bath

1.0 OBJECTIVE

To ensure that the dry bath is operated and calibrated properly.

2.0 SCOPE

This SOP is applicable for operation and calibration of the dry bath.

3.0 RESPONSIBILITY

Microbiologist - Quality Control

4.0 ACCOUNTABILITY

Manager- Quality Control

5.0 PROCEDURE

5.1 General cleaning procedure

5.1.1 Ensure that the power supply to the dry bath is switched OFF.
5.1.2 De-dust the dry bath daily externally with a clean dry cloth.
5.1.3 Once in a week remove adhered dust by wet mopping using soap solution. Afterward, wipe the surface with a clean dry cloth to remove the moisture.
5.1.4 Mop the interior surfaces with a clean dry cloth, daily.
Related: SOP for Water Bath

5.2 Operating Procedure

5.2.1 Ensure that the dry bath is properly connected to the power supply.
5.2.2 Switch ‘ON’ the main switch and then the instrument switch.
5.2.3 Set the required temperature to 37 °C by pressing the 'SET knob and soft keys.
5.2.4 Monitor the temperature daily during operation.

5.3 Calibration Procedure

5.3.1 Switch ON the instrument.
5.3.2 Put the glycerol solution in the five-hole of the dry bath. Four corners and one center
5.3.3 Leave for 15 minutes for stabilization.
5.3.4 Put the calibrated thermometer for each location one by one
5.3.5 Record the results after stabilization as per Annexure – I
5.3.6 Frequency of calibration – Monthly once

6.0 ABBREVIATIONS

6.1 SOP - Standard Operating Procedure
6.2 No. - Number
6.3 QA - Quality Assurance
6.4 QC - Quality Control
6.5 CCF - Change control format

ANNEXURE - I

CALIBRATION REPORT OF DRY BATH

Asset ID  No.	:		Ref.  SOP No.	:
Make	:		Model No.	:

Observation:

Sr. No.	Standard value (in  ºC )	Set  value (in  ºC )	Tolerance	Remark
1.	37 ºC		± 1ºC
2.	37 ºC		± 1ºC
3.	37 ºC		± 1ºC
4.	37 ºC		± 1ºC
5.	37 ºC		± 1ºC

Remarks:    The instrument is calibrated as per the SOP and shows satisfactory / does not satisfactory results as per calibration procedure.

Calibrated on                 : ____________________

Next calibration due on   : ____________________

Done by:                                                                                          Checked

Date:                                                                                                Date:

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