I have been using FT NIR (Perkin Elmer make) for different purposes. I have trying to develop a method for the determination of IPA content in tablet blends by using FTNIR. I am unable to get a satisfactory respeonse for IPA. I doubt whether i am using a right technique for measurement? Can anubody help in directing me to the right method?

You could also use gas chromatography, if you have a GC in your lab.