... 3:1994 standards (levels:Pure Butanol = 6, Triethanolamine = 6, Ethylene glycol = 6, Dibutyl phtallate = 6, Auto-Diesel (Gas oil-38 ... unleaded petrol (4 star - 98 octane) = 5, Methylamine = 5, Diethyl phtallate = 5,Sulphuric Acid 50% = 6, Cyclohexane = 6, Diethanolamine = ... = 6, Tetrachlro ethylene = 6, Hydrochloric acid 37% = 6, Naphta solvent = 2, Petroleum ether = 6,Methyl t-butyl ether = 4).• EN388 ...