BS 1911 discusses specifications for hard soap. BS 1911 specifies requirements and gives corresponding test methods for hard soap for domestic purposes.
BS 1911 applies to hard soaps that are supplied in tablets or bars to the general public.
BS 1911 on specifications for hard soap is useful for:
Hard soap is made using sodium hydroxide (NaOH) or lye. Hard soaps are especially good cleansers in hard water that contains magnesium, chloride, and calcium ions.
BS 1911 provides you with the properties and testing methods for the compliance of the hard soap. BS 1911 helps you in manufacturing high-quality hard soap.
BS 1911:1990 supersedes BS 1911:1985 which is withdrawn. BS 1911:1990 includes some technical changes with respect to BS 1911:1985. These include: