DIN EN 15168:2007 表面活性劑.測定氫氧基值.測定P-甲苯磺酰氟異氰酸鹽(TSI)法和四丁基銨氫氧化物有效滴定測量法
Surface active agents - Determination of hydroxyl value - p-Toluensulfonyl isocyanate (TSI) method and potentiometric titration with tetrabutylammonium hydroxide; English version of DIN EN 15168:2007-02