Colloidal silver generators are available from online sellers such as Nature's Alternatives, Elixa and Colloidal Silver How-To. These generators range in price from $12.00 to $369.00, as of 2015. The price depends on the seller and on the amount of silver water the device produces.
The generators come in both AC and 9-volt battery-powered versions. Some retailers recommend amber-colored glass bottles for storage of the silver water, as its charged particles lose their potency in clear glass or plastic bottles that allow light penetration. Colloidal Silver How-To and Nature's Alternatives both offer the amber-colored glass bottles for sale on the company websites.