Ko te whakaurunga ngawari: te tango i te puehu me te whakatika tika i mua i te whakaurunga, kaua e awangawanga mo nga mirumiru, pai ki to mata me te mea kaore i reira.
1. Horoia te mata o te mata, horoia ki te putea waipiro i te tuatahi;katahi ka whakamahi i te whakapiri whakauru puehu ki te horoi ano i te mata mena kare tonu te mata e clran engouth.
2. Tihorea te kiriata tuku.Katahi ka whakahāngaitia te parepare mata ki te mata.Kia tupato kei pa ki te whakapiri o te kiriata.
3. Āta whakahāngaitia te kiriata ki te mata me ngā kōhao ka āta tīmata te tukanga tono.
4. Whakamahia nga ringa e rua ki te whakaheke i te parenga mata ki runga i to mata.Pēhia te waenganui o tō mata, kātahi ka āta piri ki te mata katoa.Ko te kirikiri mata katoa
ki te mahi adsorption aunoa.Ma te whakamahi i te kakahu ma, te tangohanga mirumiru taikaha.