1. Kuchokera ku mfundo yosefera ya ultrafiltration membrane water purifier (UF) ndi RO water purifier, zonsezi zimasefa madzi kudzera mu polymer iron.
Chotsani zinthu zodetsa m'madzi.

2. Kuchokera ku kulondola kwa kusefera kwa nembanemba ya ultrafiltration ndi nembanemba ya RO, kulondola kwa kusefera kwa ziwirizi n'kosiyana. Kulondola kwa kusefera kwa nembanemba ya ultrafiltration ndi 0.01 microns,
Kulondola kwa kusefa kwa nembanemba ya RO ndi ma microns 0.0001.

Madzi apampopi oyeretsedwa ndi nembanemba ya ultrafiltration amatha kuchotsa zinthu zodetsa monga matope, dzimbiri, colloid ndi tizilombo toyambitsa matenda,
Nthawi yomweyo sungani mchere woyambirira ndi zinthu zina m'madzi.

Pambuyo poyeretsa ndi kuyeretsa nembanemba ya RO, madzi oyera okhala ndi mamolekyulu amadzi okha amapezeka, omwe samangochotsa matope, dzimbiri, ndi zina zotero.
Ma Colloids, mabakiteriya ndi zinthu zina zodetsa, komanso amachotsa mankhwala ophera tizilombo, zitsulo zolemera, ndi zina zotero. Olansi RO Water purifier W4 (Reddot design yapatsidwa) mu
Palinso chinthu chosefera cha chinthu chotsalira pambuyo pa kusefera kwa RO membrane, chomwe chimawonjezera mchere ndi zinthu zotsalira zomwe zimathandiza thupi la munthu. Chapadera kwambiri ndi strontium.
Strontium imachepetsa kuyamwa kwa sodium ndi calcium m'thupi.

3. Oyeretsa madzi a ultrafiltration membrane nthawi zambiri amagwiritsa ntchito mphamvu ya madzi apampopi kuti asefe popanda magetsi. Chotsukira madzi cha RO chifukwa kulondola kwa kusefa ndi kwakukulu kwambiri,
Kusefa ndi kuyeretsa sikungatheke pogwiritsa ntchito mphamvu ya madzi a pampopi, choncho nthawi zambiri amafunika mphamvu ndi kupanikizika kuti ayeretsedwe ndi kusefedwa kwa madzi a pampopi.
Kuphatikiza apo, makina oyeretsera madzi a RO nthawi zambiri amapanga madzi otayira. Kudzera mu kusintha ndi kusintha kwa ukadaulo m'zaka zaposachedwa, chiŵerengero cha madzi otayira cha makina oyeretsera madzi a RO chachepetsedwa kuchoka pa 3: 1 mpaka 2: 1 kapena 1: 1.