1. He mea hanga te kiriata UF mai i ngā kiriuhi tātari-rahi, ko te kiriata Ro ia he mea hanga mai i ngā kiriuhi osmosis whakamuri.

2. Ka whakamahia te kiriata UF hei tango i ngā matūriki me ngā ngota nui, ko te kiriata Ro hei tango i ngā matūriki me ngā ngota iti.
3. He iti ake te tere whakakorenga o te kiriata UF i te kiriata Ro, ko te tikanga tera pea ka puta tonu ētahi poke mā roto i te kiriata UF, engari he nui ake te tere whakakorenga o te kiriata Ro.
4. Ka whakamahia te kiriata UF i roto i ngā tono maimoatanga wai pēnei i te maimoatanga-mua mō ngā pūnaha RO, ko te kiriata Ro ia ka whakamahia i roto i te tango tote me ētahi atu tono wai parakore teitei.
5. He iti ake te pēhanga e hiahiatia ana mō te kiriata UF i te kiriata Ro, ā, he pai ake te penapena pūngao.
6. He iti ake te utu o te kiriata UF i te kiriata Ro, ā, he mea rongonui mō ngā tono maimoatanga wai ahumahi me ngā tono maimoatanga wai ā-tāone.