2007GB/T 613-2007 Chemical reagent.General method for the determination of specific optical rotatory power(specific optical rotation)
1988GB/T 613-1988 Chemical reagent--General method for the determination of specific optical rotation
1977GB 613-1977 General method for photometric determination of violet rotation of chemical reagents
GB 613-1977 General method for photometric determination of violet rotation of chemical reagents was changed to GB/T 613-1988 Chemical reagent--General method for the determination of specific optical rotation.