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Accurate weighing is the foundation of reliable analytical results in every quality control (QC) laboratory. Because weighing errors can impact the entire analytical process, the United States Pharmacopeia (USP) has established strict requirements for balances used in quantitative measurements.
This white paper explains USP weighing requirements, including General Chapters 41 "Balances" and 1251 "Weighing on an Analytical Balance," and provides practical guidance for qualifying, operating, and maintaining balances to ensure accurate, consistent, and compliant weighing results.