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Low Lithium Chloride Assay due to moisture absorption

Lithium Chloride is a very hygroscopic material and it is strongly believed that it had absorbed moisture which led to low assay result (98%). On the monograph, it does not say the assay is calculated on dried basis nor the equation is incorporating the Loss on Drying result.

Is it ok to first dry the sample and then use it for assay test?

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