USP: Chapters 'Balances <41>' and 'Weighing on an Analytical Balance <1251>' final
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5-7 May 2026
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The comment periods for the USP chapters 'Balances <41>' and 'Weighing on an Analytical Balance <1251>' closed at the end of 2024. In the meantime, both chapters have been finalised and are now available for viewing. Both documents are set to become officially valid in February 2026. As already reported in the news USP: Commenting on 'Balances <41>' and 'Weighing on an Analytical Balance <1251>' possible again, the texts of the chapters have been fundamentally revised in addition to formal changes and adjustments.
You can view the drafts of the chapters 'Balances <41>' and 'Weighing on an Analytical Balance <1251>' after registering once on the Pharmacopeial Forum website.
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