Calibration of Laboratory Oven

1.0 PURPOSE   

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

      of Laboratory Oven.

2.0 SCOPE 

      The scope of this
standard operating procedure includes calibration of Laboratory

     Oven.

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 laboratory oven 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 laboratory oven and allow it to
reach the set point temperature.

4.6  Apparatus Required For Calibration:Platinum
resistance thermometer with    sensor

      
and digital temperature indicator.

4.7    CALIBRATION:

4.7.1  Insert the sensor of the reference/calibrator
sensor (PRT) in the laboratory oven

          as near as possible to the sensing
tip or sensor of the temperature

          controller/indicator of the
laboratory oven.

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

4.7.5 Correlate the readings observed with
the reference standards and apply corrections, if necessary.