SOP for Oven of Loss on Drying

1.0 OBJECTIVE

To lay down the procedure for operation of L.O.D. oven.

2.0 SCOPE

This SOP shall be applicable to Quality Control Dept.

3.0 RESPONSIBILITY

Supervisor Quality Control

4.0 ACCOUNTABILITY

Sr. Manager Quality Assurance

5.0 PROCEDURE

5.1 Tightly close the door of the oven.
5.2 Switch on the instrument.
5.3 Set desired temperature using temperature control knob.
5.4 Allow the instrument to reach the desired temperature.
5.5 Switch off the instrument and place substance to be dried into the oven.
5.6 Close the door tightly & switch on the instrument.
5.7 Allow substance to be dried in the desired temperature for the specified time period.
5.8 Switch off the oven.
5.9 Remove substance & place in a desiccator to attain Room Temperature before weighing.
5.10 If drying in the vacuum is required, after step (5.6), connect a vacuum pump to vacuum nozzle & allow the desired vacuum to be created, then close the vacuum knob tightly and proceed to step (5.7), maintaining the vacuum throughout the drying process.
Related: Difference Between Water (Moisture) Content and Loss on Drying (LOD)

6.0 ABBREVIATIONS

6.1 SOP: Standard Operating Procedure
6.2 Dept.: Department

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