Different kinds of finings products have different purposes. Most finings products either have a negative or a positive charge; and so attract suspended solids in your wine of the opposite charge.
You may need to use both a negative and a positive charged fining product to completely clear your wine. If you would like more information regarding finings we recommend this article from the Winemakers Magazine
Bentonite may help clear wine. Use during &/or after fermentation. Holds a negative charge.
CRISTALINE® is a fish fining agent. It eliminates bitterness and refines wines allowing total elimination of the smallest particles.