A simple empirical correction method for the intrinsic viscosity in the experiment of GPC combined with viscometer has been presented in this paper. The values of [η] remain unchanged. It is only necessary to correct the values of corresponding elution volume Vi. For linear GPC columns

an empirical correction equation was proposed as follows:where tgθ is the slope of uncorrected straight line in a plot of log [η] vs V

Vi and Vi

corr are the uncorrected and corrected elution volume for count i respectively;Si+1 Si-1 and Si represent corresonding area in chromatogram for count i+1.i-1.and i.This correction method is tested and verified by the broad sample and standard sample of polystyrene as well as the unfractionated and the fractionated samples of poly (vinylchloride) and chlorinated polyethylene. The results are satisfactory.