SN/T 2889-2011 Food contact materials for export. Polymers. Determination of toluene, ethylbenzene, propylbenzene, isopropylbenzene, styrene and total volatile substances in polystyrene. Gas chromatography method
Food contact materials for export. Polymers. Determination of toluene, ethylbenzene, propylbenzene, isopropylbenzene, styrene and total volatile substances in polystyrene. Gas chromatography method