Ko e valitaa malala ko ha meʻa fakatuʻutamaki, ʻa e kona mo e fakahehema ke flammability mo e fakaʻauha.
Naʻe tauhi ʻe he tangike tukuʻanga koloa ʻa e mafana ʻo e ʻea, ʻoku ʻi ai ha ʻahu lolo maʻamaʻa, predominantly e lolo mama fractions, posing ha ngaahi fakatuʻutamaki mahuʻinga. ʻE lava ʻe he ngaahi ʻahu ko ʻeni ʻo fakaulo pe ʻita kapau te nau fetuʻutaki mo e afi ʻoku ava.