1. Daga ƙa'idar tacewa ta ultrafiltration membrane water purifier (UF) da RO water purifier, dukansu suna tace ruwa ta hanyar polymer material membrane.
Cire ƙazanta daga ruwa.

2. Daga daidaiton tacewa na membrane na ultrafiltration da membrane na RO, daidaiton tacewa na biyu ya bambanta. Daidaiton tacewa na membrane na ultrafiltration shine microns 0.01,
Daidaiton tacewa na membrane RO shine microns 0.0001.

Ruwan famfo da aka tsarkake ta hanyar membrane na ultrafiltration na iya cire ƙazanta masu cutarwa kamar laka, tsatsa, colloid da ƙwayoyin cuta na ƙwayoyin cuta,
A lokaci guda kuma, riƙe ma'adanai na asali da abubuwan da aka gano a cikin ruwa.

Bayan tacewa da tsarkake membrane na RO, ana samun ruwa mai tsarki tare da ƙwayoyin ruwa kawai da suka rage, wanda ba wai kawai zai iya cire laka, tsatsa, da kuma yadda ya kamata ba.
Colloids, ƙwayoyin cuta da sauran ƙazanta masu cutarwa, amma kuma suna cire magungunan kashe kwari, ƙarfe masu nauyi, da sauransu. Mai tsarkake ruwa na Olansi RO W4 (An ba da kyautar ƙirar Reddot) a cikin
Akwai kuma wani sinadari mai tace sinadarin bayan tace membrane na RO, wanda ke ƙara ma'adanai da abubuwan da ke da amfani ga jikin ɗan adam. Wanda ya fi na musamman shine strontium.
Strontium yana daidaita shan sinadarin sodium da calcium a jiki.

3. Masu tsarkake ruwa na membrane na ultrafiltration gabaɗaya suna amfani da matsin ruwan famfo don yin tacewa ba tare da wutar lantarki ba. Mai tsarkake ruwa na RO saboda daidaiton tacewa ya yi yawa,
Ba za a iya samun tacewa da tsarkakewa ta amfani da matsin ruwan famfo da kansa ba, don haka gabaɗaya ana buƙatar a ƙara masa kuzari da matsi don a sami tsarkakewa da tace ruwan famfo.
Bugu da ƙari, masu tsaftace ruwa na RO gabaɗaya suna samar da ruwan shara. Ta hanyar haɓakawa da haɓaka fasaha a cikin 'yan shekarun nan, rabon ruwan shara na masu tsarkake ruwa na RO ya ragu daga 3: 1 zuwa 2: 1 ko 1: 1.