From left to right: Nickel (II) sulfate, Potassium alum, Barium chloride, Copper (II) sulfate, Cobal
From left to right: Nickel (II) sulfate, Potassium alum, Barium chloride, Copper (II) sulfate, Cobalt (II) chloride, Sodium Chloride and Potassium permangante. -- source link
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