Title: Standard operating procedure for determination of % L.O.D by using desiccator.

 

1.0 OBJECTIVE:

To lay down a procedure for determination of percentage Loss of drying by using desiccator.

2.0 SCOPE:

This SOP shall be applicable to Q.C Dept.

3.0 RESPONSIBILITY:

3.1        Doing: Q.C Analyst.

3.2        Checking: Q.C-Manager.

4.0 ACCOUNTABILITY:

4.1        Head of the Q.C Department.

5.0 MATERIAL AND EQUIPMENT:

5.1        Desiccator.

5.2        Weighing balance.

5.3        Spatula.

6.0 PROCEDURE:

6.1        Weigh the test sample.

6.2        Set the desiccator apparatus with desiccant.

6.3        Operate the desiccator according to the SOP.

6.4        Place the sample into the china dish or petri dish.

6.5        Set the room temperature and at atmospheric pressure for at least 45 minutes. If there is need of to apply vacuum operate it according to SOP at specified temperature and pressure.

6.6        And wait till the sample loses its moisture.

6.7        After 45 minutes weigh the sample again by using analytical weighing balance i.e. the final weight.

6.8        Note down readings on given Annexure-1.

7.0 REVISION LOG:

Revision No.

Effective Date

Reason

00

 

New SOP

 

8.0       REFERENCES:

8.1     Not Applicable.

9.0        ANNEXURES:

Annexure 1: Observations of percentage Loss of drying by using desiccator.

 

Annexure 1:

Observations of percentage loss of drying by using desiccator

Percentage loss of drying by using desiccator

Apparatus: ____________________

Temperature: __________________

Pressure: _____________________

Weight of Sample = _____________

Time period = _____________

Pressure= _________________

Sr.#

Time (min)

Weight of sample (g)

% Loss of Moisture

Initial weight

Final weight

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Average % Loss of Moisture: _____________

 

% Loss of Moisture:

 

 

Remarks: ____________________________________________________________

 

 

 

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