Chemex 100 Pre-Folded Unbleached Filter Squares Overview A pack of 100 unbleached pre-folded circular filters designed for use with Chemex coffeemakers. Chemex Filters are 20-30% heavier than competitive filters and help to regulate the filtration rate to ensure proper infusion time. The filters remove sediments, fats, and undesirable oils from your coffee for a pure and flavorful cup every time. Fits the 8 and 10-Cup Chemex Classic coffeemakers and the 8-cup Chemex Glass Handle coffeemaker