Evaluation of Uncertainty in Determination of Protein in Infant Milk Powder

To establish an uncertainty method for determining the protein content in infant formula, in order to find out the factors affecting the uncertainty. The mathematical model is established according to GB/T 5009.5-2003, and its uncertainty is evaluated according to the relevant provisions of JJF1059-1999. The experimental results are as follows: the uncertainty is estimated to be 0.289~100g, and the uncertainty is mainly introduced by repeating the determination of protein content.

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