Zinc Sulphate..
Zinc sulphate, zinc sulphate mono, zinc sulphate hepta, copper, copper sulphate, copper sulphate.
Bentonite.
Zinc sulphate, copper sulphate, ferrous sulphate, bauxite, T-shirts, zinc ash.
Nickel salts and compounds, viz. Nickel oxide, nickel carbonate, nickel sulphate (crystal & solution), nickel acetate.