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1 Scope This Standard specifies a method for determination of impurities in milk and milk products. This Standard is applicable to determination of impurities in pasteurized milk, sterilized milk, raw milk, condensed milk and milk powder, while inapplicable to those additives containing nondairy protein, starch ingredients, insoluble color substances and affecting filtration. 2 Normative references Documents referenced in this Standard are indispensable for application of this Standard. For dated references, only the dated edition is applicable to this Standard. For undated references, the latest edition (including all amendments) is applicable to this Standard. 3 Principle Impurity level is determined according to the quantity of visible colored impurities remaining on the filter plate after the sample is filtered by a filter plate and washed. |