6 cup size makes 30 fl oz. Chemex delivers the purest flavor experience. Made of non-porous Borosilicate glass, which will not absorb odors or chemical residues. The Chemex used together with Chemex Bonded Filters, will guarantee that our pour over brewing process will deliver the perfect cup of coffee, without any sediments or bitter elements. Match your Filter size to your Chemex: For 6 cup size Use Chemex Bonded Filters FC-100, FS-100,or FSU-100.