Ngwaahịa a bụ eriri ọla kọpa ion masterbatch, nke enwere ike iji maka yarn site na usoro eserese.Ọla kọpa nwere ikike ịgba ọgwụ mgbochi siri ike, nke nwere ike ịmịnye amonia, hydrogen sulfide, VOC na ndị ọzọ, n'otu oge ahụ, ọ nwere ikike igbu egbu mara mma na microorganism, nke dabara adaba maka ịkwa sọks, mkpuchi akpụkpọ ụkwụ, uwe, wdg.