This is a bottle of pre-mixed Wood's nickel strike plating solution. It provides a flash coating of nickel onto some hard-to-plate metal with a common electroplating setup. A bright nickel plating usually follows this process.
Over the time, the concentration of this solution might increase due to evaporation of water. Appropriate amount of water can be added to maintain the concentration of this solution.
This is a professional grade chemical mixture and requires applicable working knowledge and safety awareness to use. You are responsible for the safe and legal use of this chemical after delivery. Avoid direct skin contact and do not ingest. Always use electroplating chemicals in a well ventilated area. In case of contact, wash with soap and water immediately to avoid possible chemical allergies.