根据测量不确定度的评定和分析拟定水分测定管不同标称容量的允差

目的：拟定水分测定管不同标称容量的容量允差；方法：通过对甲苯法测水分不确定度评定和分析，拟定水分测量管不同标称容量的容量允差；结果：水分测定管参照流出式分度吸量管进行检定时准确度和不确定度更符合实验需求；结论：为使甲苯法测水分的测定结果更加准确、可靠，应根据水分测定管的生产工艺和检测需求制定出水分测定管的检定规程。

Objective: To suggest capacity allowance of moisture measuring tubes with different nominal capacities. Methods: The capacity allowance of moisture measuring tubes with different nominal capacities was suggested through evaluation and analysis on the measurement uncertainty of the toluene method for moisture determination. Results: The accuracy and uncertainty that were obtained with the moisture measuring tube with reference to efflux indexing pipettes were more aligned with experimental requirements. Conclusion: To ensure the accuracy and reliability of the testing results, we suggest that the standard should lay down vertification regulation of the moisture measuring tube according to production technology and testing requirements of the moisture measuring tube.

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