GC evaluation of measurement uncertainty for the determination of vitamin E soft cream

Objective:To set out the procedure for estimation of measurement uncertainty for the determination of Vitamin E by GC.Methods:Each uncertainty component was evaluated with respect to the significance of its contribution to the overall measurement uncertainty and was expressed as standard uncertainty.All the standard uncertainties were then combined according to the appropriate rules to give a combined standard uncertainty and an expanded standard uncertainty.Results:The expanded standard uncertainties for the GC determination of Vitamin E is 3.6%.Conclusion:Measurement uncertainty is applicable to set the limit of the Vitamin E.The establishment of the methodology for the evaluation of measurement uncertainty is important to the studies of Drugs,Health Products,Foods and cosmetic standards.