ʻO ka membrane PVC kahi mea membrane me ka hana hoʻomaʻemaʻe wai. Hiki iā ia ke wehe maikaʻi i nā mea haumia a me nā mea haumia i ka wai, me nā mea paʻa i hoʻokuʻu ʻia, macromolecular organic matter a me kekahi mau ion, ma o ka nānā ʻana kino a me ka nānā ʻana i ka molekala, no laila e hoʻomaikaʻi ...
Heluhelu hou aku