Bona
He mea motuhake ki te hanga o te filtration membrane me te taputapu wehenga, kiriuhi pararopi, kiriuhi muka tuwhera, kiriuhi uku tubular, kiriuhi uku pereti, wehenga me te whakakī purenga.Ka whakarato i te wehenga chromatographic me nga ratonga hangarau e pa ana ki te pure.