按照GB 5413.11-2010婴幼儿食品和乳品中维生素B1的测定所述方法测定奶粉中维生素B1的含量，对测试过程系统产生的不确定度进行评定，影响过程不确定度的主要来源为校准过程引入的不确定度，样品称量及定容体积所引入的不确定度，及重复性实验所引入，计算得扩展不确定度U=0.22mg/100g（k=2）% According to GB 5413.11-2010 Determination of vitamin B1 in foods for infants and young children milk and milk products, analyzing the uncertainty and evaluating affecting factors in preparation of standard series, and samples and measurement repeatablility. The Uncertainty is 0.22mg/100g(k=2).
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