1993GOST 18522-1993 Liquid resins and plasticizers. Methods for determination of colour
1973GOST 18522-1973 Liquid resins and plasticizers. Methods for determination of the colourity
GOST R 50407-1992 Liquid resins and plasticizers. Method for determination of colourity has been changed from GOST 18522-1973 Liquid resins and plasticizers. Methods for determination of the colourity.