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Silica Gel

What it does :

Silica Gel is used to reduce chill haze-causing proteins, while leaving foam retention and mouthfeel unchanged.

What it is:

Also known in German as Kieselsol, this is a hard, granulated form of hydrated silica, with particles that possess manufactured pores of specified sizes. It is usually available in a convenient liquid form.

How it works:

Silica Gel prevents chill haze by removing haze-causing proteins from the beer.

Mechanism:

This additive consists of hollow silica particles, each of which contains a porous honeycomb that invites haze-forming proteins inside. As the particles absorb the proteins they settle out and form sediment at the fermenter bottom for removal.

Dosage:

Use 1 teaspoon per 5 gallons. Add to secondary fermenter 2 to 4 days before bottling or kegging.

Drawbacks:

The use of Silica Gel in unfiltered beer is not approved by the FDA, who warns that beer treated with it must be decanted before drinking.

Preparation:

Add to secondary fermenter and mix thoroughly.

Related Links

Water Treatment
Volume Conversion
Weight Conversion
Silica Gel