WINEMAKING, BREWING SUPPLIES, GRAPES and JUICE for amateur winemakers. 
Fall Bright, The Winemakers Shoppe, 10110 Hyatt Hill, Dundee, NY 14837 
winemaking@fallbright.com 

LQ Super-Kleer KC Finings:  Liquid clearing agent with a one-two punch combination of Kieselsol and Chitosan, creates both strong negative and positive charges in the wine, allowing for faster and successful clearing. It is added directly to the wine followed by thorough stirring. 

Add Kieselsol to carboy of wine, etc. Stir gently. 

Instructions on the back of the package indicate that you wait an hour to add the second pack, which is Chitosan.  

Dissolve Chitosan in 1 fl. oz of warm water. Add to carboy of wine etc. Stir gently. 

Attach airlock and bung. Clears wine, etc. brilliantly in 12-48 hours. May not clear pectin haze or products made with hard water. One package is sufficient to clear a 5 or 6 gallon batch of beer or wine in two days.   

CAUTION: Chitosan is a shellfish derivative.  (We have read that this is not an issue if you are allergic to shellfish, however, it may warrant concern.  Marcy) 

Chitosan comes from shellfish – it's actually derived from chitin, a natural polymer found in the shells of shellfish and crustaceans.

Allergic reactions come from the proteins of the shellfish organism, not from the shells.

Any residual shellfish proteins that may have been left on these shells are completely removed during the process of transforming chitin into chitosan. Plus virtually all traces of chitosan are removed from the finished wine after the chitosan drops out of the must during the clearing process by means of racking and/or filtering.

So, the origin of chitin, the process of creating chitosan and the limitation of the chitosan means that, even those with shellfish allergies, can use chitosan with confidence.

However, as with any serious allergy issue, talk to your doctor first or request a test for chitosan.

There may be concerns of processing equipment being used on the actual protein of the shellfish, such as cautions on some nut products that are processed in plants that process peanuts, etc.