Boric Acid Cobalt (II) Acetate Cobalt (II) Chloride Cobalt (II) Nitrate Nickel (II) Acetate Nickel (II) Chloride Nickel (II) Sulphate Nickel Hydroxide Oxalic Acid Potassium Hydroxide Potassium Iodide Sodium Nitrate Stannous (II) Sulphate Stannous Chloride Zinc Sulphate