BChemex Bonded Unbleached Pre-folded Square Coffee Filters, 100 Count ReviewbP PP Chemex Bonded Unbleached Pre-folded Square Coffee Filters, 100 Count PDurable paper constructionPFits all Chemex coffee makers except CM-1, CM-1C, CM-1GHPThe Chemex filter is folded into a cone shape, exactly as in laboratory techniquePAssures uniform extraction since the water filters through all the grounds on its way to the apex of the conePChemex filters are 20-30 heavier than competitive brands and remove even the finest sediment particles, and well as oils, and fatsP