In the field of water content measurement, the calibration of coulometric methods (e.g., coulometric Karl Fischer titration or evolved water vapor analysis) is often overlooked. However, as coulometric water content measurement methods are used to calibrate secondary methods, their results must be obtained with the highest degree of confidence. The utility of calibrating such instruments has been recently demonstrated. Both single and multiple point calibration methods have been suggested. This work compares these calibration methods for the evolved water vapor analysis technique. Two uncertainty estimation approaches (Kragten’s spreadsheet and M-CARE software tool) were compared as well, both based on the ISO GUM method.

在水含量测量领域，电量分析方法的校准（例如电量卡尔·费休滴定法或逐步发展的水蒸气分析）常常被忽略。但是，由于使用电量分析法测量含水量的方法来校准次要方法，因此必须以最高的置信度获得其结果。最近已经证明了校准这种仪器的效用。已经提出了单点和多点校准方法。这项工作将这些校准方法与已发展的水蒸气分析技术进行了比较。还比较了两种基于ISO GUM方法的不确定性估计方法（Kragten的电子表格和M-CARE软件工具）。