Make fresh, high quality Colloidal Silver Liquid yourself at home for a fraction of the cost. Easy to use, just immerse the supplied pure silver rods in a jar of distilled water. Plug the generator into a standard 240v wall socket and you will be underway. Make your own Colloidal Silver at home. This kit contains An electric Colloidal Silver Generator, 2 silver rods (99.9% pure silver) Rod holder Detailed instruction booklet. All you need is a jar and distilled water. Comes with a one year's guarantee. This generator is for 240 volt use only.