determination of % L.O.D by using desiccator

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: ____________________________________________________________