General Test Procedure Non Volatile Matter and Residue on Evaporation

 

General Test Procedure Non Volatile Matter and Residue on Evaporation

 

1. Purpose
   1. This procedure is applicable to all incoming Raw materials.
2. Apparatus
   1. Calibrated weighing balance
   2. water bath
   3. Evaporating dish
3. Reagents
   1. None
4. Procedure
   1. Place clean and dry evaporating dish in an oven at 105°C for 30 minutes. Remove it and keep it in desiccators for 15 minutes. Record the weight.
   2. Transfer 50 ml accurately measured sample being examined into dish.
   3. Place dish on a boiling water bath, till the sample is completely evaporated.
   4. Take out and clean the bottom of dish with tissue paper (there should not be any deposition / scaling at the bottom of dish).
   5. Keep the dish in an oven at 105°C for 30 minutes, remove and place it in a desiccators, allow it to cool for 15 minutes.
   6. Record the weight of dish with residue and calculate the non volatile matter by formula:

5. Reference

   1. None

6. Revision History

Revision No.	Details of Changes	Reason for change
00	New GTP	NA

End of Document

 

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