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, Cobal
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, Cobal
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, Cobal
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, Cobal