True Colloidal Gold – 25 ppm – 1 US Gallon (128 Fl Oz) in white plastic jug. This product consists of 99.99+% pure Gold nanoparticles colloidally suspended in pure water. This product may be ruined if allowed to freeze, so make sure not to have this delivered to an outside mailbox, porch, etc. where it may be left in freezing conditions. You are purchasing 1 US Gallon of Sirius Metals manufactured 25 ppm true colloidal Gold in a factory sealed white plastic jug. This product consists of 25 ppm of 99.99+% pure Gold nanoparticles – colloidally suspended in pure water. No color is added. It is made from more expensive 99.997+% pure Gold metal – which is up to 10 times more pure than 24 Karat Gold.