Photometricmethod(ReferenceMethod)
Thisstandardspecifiesareferencemethodforthedeterminationofthecoppercontentofmilkandmilkproducts.
Themethodisapplicableto:milk,skimmedmilkandbuttermilk;evaporatedmilkandsweetenedcondensedmilk;wholeandskimmedmilkpowder;creamandbutter;butterfat;ice-cream;hard,semi-hardandsoftcheesesofvariousages,andprocessedcheese;andcaseins,caseinatesandcoprecipitates.
Themethodissuitablefordeterminingcoppercontentsaslowas0,05mg/kgintestsamplesofbutterandbutterfat.
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