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Water Activity and Primary Packaging Selection for Oral Solid Dosage Products

The new general chapter USP <922> states that water activity determination can be used to assess the level of protection provided by primary packaging for an oral solid dosage product over its entire shelf life.

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Water activity measurements, described in this article, provide unique information and complement the data collected from USP<670> Auxiliary Packing Components and USP<671> Containers – Performance Testing.

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