This Gulf standard is concerned method content of preservatives (benzoic, sorbic, propionic acid, or salts) and synthetics colorings (Brilliant Blue FCF INS133, Sunset yellow FCF INS110 , Tartarzine INS102, Ponceau 4 R ( Cochineal Red A) INS124 and Azorubine( carmoisine) INS122 ) in milk and its products by high-performance liquid chromatography.