Applicable to commercial nitric acid suitable for general industrial purposes. Determination of total acidity, sulphuric acid content, nitrous acid content, calculation of nitric acid content, determination of combined ammonia content, total sulphate content, chloride content, iron content, lead content and sulphated ash.Cross References:BS 612BS 975BS 1647BS 1752BS 1792BS 1848BS 3591BS 3978