Whirlfloc® BWS kettle coagulant and fining agent is a purified, high molecular weight carrageenan powder extracted from Irish Moss algae. It reacts with colloidal, haze promoting material in the wort to accelerate the formation of dense and compact trub during the hot and cold wort breaks. Whirlfloc binds with the trub and is removed with that material by settling or filtration before the beer is finished. It does not remain in the beer. This saves time, boosts wort recovery, and results in a brighter wort. Improved wort clarity with Whirlfloc BWS leads to cleaner fermentation and easier filtration afterward.
Recommended usage: For 5 gallons, hydrate 0.017-0.034oz in a small amount of warm water. Add the hydrated powder solution to the boiling kettle, 15-20 minutes before the end of boiling.