SOP on Calibration of
Humidity Chamber

1.0 
PURPOSE

The
purpose of the standard operating procedure is to provide guidelines for
calibration of Humidity Chamber. 

2.0 
SCOPE

The
scope of this standard operating procedure includes calibration of Humidity
Chamber. 

3.0 
RESPONSIBILITY

3.1    Section Incharge

3.2    Technical Manager

3.3    Q.A. Manager

4.0 PROCEDURE

4.1
Switch on the instrument.

4.2
Ensure that the temperature indicator/controller is in working condition i.e.
the set

      temperature should be maintained/retained
properly.

4.3
Ensure that the door of incubator is properly closed and does not loosen during
operation.

4.4
Ascertain and set the points/points at which calibration is required.

4.5
Switch on the humidity chamber and allow it to reach the set point temperature.

4.6
Apparatus Required: Reference
thermometer with sensor and digital temperature indicator.

4.7
CALIBRATION:

4.7.1
Insert the sensor of the reference/calibrator sensor (PRT) in the humidity
chamber as near

        as possible to the sensing tip or
sensor of the temperature controller/indicator of the    

        humidity chamber.

4.7.2
When the temperature is stable note down the temperature reading as indicated
by on the

          humidity chamber and the reference
indicator simultaneously.

4.7.3
Take at least three to four readings for better accuracy and reproducibility.

4.7.4
Set the next point and record the temperature readings accordingly.

4.7.4
Correlate the readings observed with the reference standards and apply
corrections, if   

         necessary.