What Is Colloidal Silver?

People have long known that silver can be used as a purifying and preserving agent. In ancient Greece and Rome, people used silver containers to keep liquids fresh. Early American pioneers put silver dollars in bottles of milk to prevent spoilage. Laboratory workers placed silver dimes in petri dishes to sterilize them.

Today, more than half of the world's airlines use silver water filters because they protect against waterborne diseases like dysentery. NASA uses a silver water-purification system in its space shuttles. Silver is sometimes used in place of chlorine to purify swimming pool water.

And since the turn of the century, people have been using silver in colloidal form as an antibiotic treatment. In fact, until 1938, colloidal silver was considered a mainstream antibiotic treatment. But production was costly with early technology, and so the use of colloidal silver died out.

Colloidal silver is a complicated name for a simple chemistry project. A colloidal system refers to superfine particles suspended in water. We all recognize silver as a precious metal. So with colloidal silver, tiny particles of silver are electro-colloidally suspended in deionized water. The silver particles and the water are dispersed within and bound to each other by an electric current. This means that each of the silver particles is given a positive charge so they repel each other and the water around them, leaving them suspended in the water. The silver particles are not dissolved, nor should they sink. They remain suspended in the solution, held there by the electric charge.

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