Non-soluble clarifier that removes yeast cells and haze causing polyphenols. It is a coarser grade of PVPP for faster settling in your vessel. Typical clarification time is 3-10 days. Usage rate is .5-2.5 grams per gallon, rough weight is 1 tsp. = 1.1 grams. It is highly recommended to use a scale for accurate dosage rates.