Chemplex Corporation manufactures Aluminium Sulphate, in liquid and solid form, for water treatment, through Zimbabwe Phosphates Industries (ZimPhos) company located in Msasa, Harare.

Aluminium Sulphate (Al3SO4) is used for portable water treatment by the City of Harare and other municipalities in the country. It is produced in liquid and solid form, from bauxite and sulphuric acid. The bauxite is imported form Mozambique.