Dongosolo loyeretsera madzi la RO lomwe limapangidwira mafakitale monga zodzoladzola, malo ogulitsa mankhwala, chakudya ndi zamagetsi limakondedwa kwambiri ndi ogwiritsa ntchito chifukwa cha madzi ake okhazikika komanso ntchito yosavuta. Dongosololi limathetsa zovuta za kusinthika pafupipafupi komanso kuyeretsa pakagwiritsidwe ntchito ka ion kusinthanitsa madzi oyeretsa. Potengera mfundo zakuthupi, zimathandiza kuti madzi azitha kupitilira filimu ya osmosis yokhala ndi m'mimba mwake ya gawo limodzi mwa magawo khumi a micron ndikulekanitsa zonyansa, ma ion, tizilombo toyambitsa matenda ndi ma colloids m'madzi, kuti akwaniritse zofunikira zamadzi muzodzoladzola, mankhwala. , mafakitale a zamagetsi ndi zakudya.