Ko te Syring Filter me te nylon membrane i hangaia e Aijiren he pai te hydrophilicity, te waikawa me te parenga alkali, me te aukati waiora. Ehara i te mea e tika ana mo nga wairewa wai kei roto he waikawa me te kawakore, engari mo nga whakarewa waro penei i te waipiro, te waiwaro, te lipids, te phenols, te ketone me etahi atu whakarewa pararopi. Ka taea te whakamahi mo nga whakarewa pararopi penei i te waikawa kaha, 70% ethanol, dichloromethane me etahi atu. Te ātete teitei o te pāmahana, te kaha pai, te matū pūmau.