SOP on Calibration of Ultra Low Temperature Freezer

 Calibration
of Ultra Low Temperature 
Freezer

 

1.0 PURPOSE   

The purpose of the standard operating procedure is
to provide guidelines for the calibration of Ultra-Low Temperature Freezer
 

2.0 SCOPE  

The scope of this standard operating procedure
includes the calibration of
Ultra-Low

Temperature
Freezer

3.0 RESPONSIBILITY

3.1 Q.A. Executive

3.2 Technical Manager

3.3 Q.A. Manager

4.0 REQUIREMENTS

4.1 Calibrated
Digital Temperature (-80 to 199.9 0 C)

4.2 Instrument
Instruction Manual
 

5.0 PROCEDURE

5.1 Calibration
Procedure                                                                                            

5.1.1 Set -80  0 C temperature at which temperature
calibration of Ultra –Low Temperature    freezer
has to be done.

5.1.2 Use the set key
& press it on the control panel of the Ultra –Low Temperature to memorise

          the temperature.

5.1.3 
Press the numerical Value Shift Key &
digital shift key to set -80 0 C temperature.

5.1.4 
Wait for the set temperature to flash on
control panel display screen.

5.1.5 
Wait for few minutes to maintain the
temperature in Ultra –Low Temperature freezer.

5.1.6 Open the door
latch & insert the PT-100 sensor of calibrated digital thermometer                                     
(-80 to 199.9 C)

5.1.6  Record
the temperature observed on Ultra-Low Temperature freezer & calibrated
digital thermometer.

5.1.7 Record the temperature at set temperature at
different time interval first reading at zero hr,

         Second
reading at the interval of 2 hrs & third reading after 2 hrs of second
reading.

5.1.8 Zero hr will be
defined as the time of starting the calibration of Ultra Low Temperature

         Freezer.

5.2.       Calibration
Record

 

Sr.No

Calibration Time
Intervals

Temperature UUC

( 0 
C )

Temperature Reference

( 0  C )

Correction to UUC

In (  0 
C ) if required

     1

 
0 hr

           -80 0  C

 

 

     2

 
0-  2 hr

           -80 0  C

 

 

     3

 
0- 4  hr

           -80 0  C

 

 

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