Standard test method for determination of the acidity as free fatty acids acid number in the presence of ammonium or triethanolamine soaps 存在铵或三乙醇胺皂时酸度作为游离脂肪酸值测定的标准试验方法
2.
Standard test method for determination of acidity as free fatty acids acid number in the absence of ammonium or triethanolamine soaps in sulfonated and sulfated oils 磺酸化或硫酸化油中不存在铵或三乙醇胺皂时酸度作为游离脂肪酸酸值测定的标准试验方法
