Dear Mohd Nadeem for the preparation of the Karl Fischer reagent you will need to use methanol anyway. In this context please have a look at the following useful link:

Karl Fischer Titration

https://www.vedantu.com/chemistry/karl-fischer-titration

Also please see the attached instructive manual entitled "Karl Fischer Volumetric Titration - Theory and Practice". Please also note that there is a series of helpful YouTube tutorials about the Karl Fischer titration available, e.g.

https://www.youtube.com/watch?v=wsZMAyxMWu4&t=29s

and several related videos.

I hope this helps. Good luck wth your work!

Traces of excess methanol than required can be disturbing. Drift determination will take care of the moisture, including any present in the methanol. Standard solutions for Karl Fisher are available commercially, pick yours!

Dear all, better to use at least two analysis technique for good accuracy. The following documents deals with many of these techniques. My Regards

https://www.researchgate.net/publication/320777820_Water_and_Moisture_Determination_-_Overview_of_Different_Analytical_Methods

dear researcher Karl fisher reagent has already an excess amount of methanol.

if you have trace methanol in the sample don't be a worry.