Rov qab osmosis tshuab ( RO tshuab ) yog lub tshuab dej ntshiab uas hla dej nyoos los ntawm cov lim zoo.Rov qab osmosis yog hom tshiab niaj hnub ntawm kev kho dej ntshiab.Los ntawm thim rov qab osmosis keeb los txhim kho cov purity ntawm dej zoo, tshem tawm impurities thiab ntsev nyob rau hauv dej.Peb lub tshuab RO feem ntau yog siv rau hemodialysis, tsev kho mob, kuaj.