He mea hanga te tātari wai pleated PES ki te paparanga tautoko o roto, o waho hoki he polyethersulfone fluoride kawemai, he papanga kore-whatu, he mata hiraka ranei.Ko te anga tātari, te tokotoko pokapū me te potae mutunga he mea hanga ki te polypropylene, ka hangaia te katoa ki te hangarau rewa wera wera, karekau he parahanga me te whakaheke pāpāho.