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通过改变碘的用量及二氧化硫的用量，对卡氏试剂的配制方法进行了摸索和改进。改进后的卡氏试剂Ｆ值大幅度提高，稳定性也得以增强，因而延长了试剂可使用寿命，降低了成本，同时也大大提高了样品水分测定的准确性。
By changing the amount of iodine and the amount of sulfur dioxide, the preparation method of the reagent was explored and improved. The improved reagent F significantly increased the value of F, stability has also been enhanced, thus extending the reagent life, reducing costs, but also greatly improve the accuracy of the sample moisture determination.