1. Ifilimu ye-UF yenziwe ngolwelwesi lwe-ultrafiltration, kuyilapho ifilimu ye-Ro yenziwe nge- reverse osmosis membranes.

2. Ifilimu ye-UF isetshenziselwa ukususa izinhlayiya ezinkulu nama-molecule, kuyilapho ifilimu ye-Ro isetshenziselwa ukususa izinhlayiya ezincane nama-molecule.
3. Ifilimu ye-UF inezinga eliphansi lokwenqatshwa kunefilimu ye-Ro, okusho ukuthi okunye ukungcola kusengadlula kufilimu ye-UF, kuyilapho ifilimu ye-Ro inezinga eliphezulu lokwenqatshwa.
4. Ifilimu ye-UF isetshenziswa ekuhlanzeni amanzi njengokwelashwa kwangaphambili kwamasistimu e-RO, kuyilapho ifilimu ye-Ro isetshenziswa ekukhipheni usawoti emanzini nakwezinye izindawo ezihlanzekile kakhulu.
5. Ifilimu ye-UF idinga ingcindezi encane kunefilimu ye-Ro, iyenza yonge kakhulu amandla.
6. Ifilimu ye-UF ibiza kakhulu kunefilimu ye-Ro, okuyenza ibe yintandokazi ezimbonini nasezicelweni zokuhlanza amanzi zikamasipala.