Ko ha fakangatangata fakafika ki he ngaahi fehalaaki ʻoku fakaʻaongaʻi ʻi he sivi ʻaki ʻa e sīpinga ke fakapapauʻi pe ʻe tali ha fuʻu koloa naʻe ngaohi.
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Ko e AQL (Acceptance Quality Limit) ko ha founga ke fai ai ha tuʻutuʻuni ki ha fuʻu koloa naʻe ngaohi ʻo makatuʻunga ʻi he ngaahi sīpinga naʻe fili noa pē, ʻo ʻikai siviʻi ʻa e meʻa taki taha. ʻOku makatuʻunga ia ʻi he ngaahi tuʻunga hangē ko e ISO 2859-1 mo e ANSI/ASQ Z1.4.
ʻOku fakapapauʻi ʻe he lahi ʻo e fuʻu koloa mo e tuʻunga sivi naʻe fili ʻa e lahi ʻo e sīpinga. ʻOku angamaheni ke fakakulupu ʻa e ngaahi fehalaaki ko e mātuʻaki mahuʻinga, lahi mo siʻi, ʻo taki taha mo hono fakangatangata tali. Kapau ʻe lahi ange ʻa e ngaahi fehalaaki ʻi he sīpinga ʻi he fakangatangata, ʻoku liʻaki pe toe vakaiʻi ʻa e fuʻu koloa.