SOP for Cleaning Procedure of Karl Fischer Apparatus

OBJECTIVE:

To lay down the procedure for cleaning of KF Apparatus. 

SCOPE: 

This SOP shall be applicable for KF Apparatus installed in Quality Control Laboratory.

RESPONSIBILITY: 

Execution : Chemist and above-QC department 

PROCEDURE: 

• Frequency: After each use 
• After completion of the analysis, open the titration flask pour the KF reagent in the KF waste bottle, wash the vessel with of methanol. 
• Clean the electrode with the help of tissue paper.
• Clean the outer surface of the instrument with Isopropyl alcohol (when required) and dry it with tissue paper. 
• As and when required, replace the ‘self indicating’ coarse silica 
• If the colour of the silica gel changes from blue to pink, regenerate the silica gel by keeping it in oven for some time till it gets blue color again. 
• After completion of cleaning of the KF apparatus, record the cleaning details in instrument log card as per current version of SOP.

ABBREVIATION(s):

SOP: Standard Operating Procedure

Q.C: Quality control

KF: Karl Fischer

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