True Colloidal Copper 25ppm 500mL in a Glass Bottle

What the brand says

You are purchasing a new 500 mL (16.9 Fl Oz) of Sirius Metals Corporation manufactured 25 ppm true colloidal Copper in a factory sealed clear glass bottle with black phenolic cap. This product consists of 25 ppm of 99.99+% pure Copper nanoparticles – colloidally suspended in pure water. No color is added. 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.