№ lp_2_3_10033
Procedural regulatory handbook establishing nationally adopted requirements and methods for compliance testing of net content declarations on packaged goods in the United States, including measurement standards, amendment procedures, and enforcement provisions.
Year: 2025
Title: NIST Handbook 133: Checking the Net Content of Packaged Goods
Issuing Organization: National Council on Weights and Measures (NCWM)
Supporting Organization: National Institute of Standards and Technology (NIST)
Adoption Body: National Council on Weights and Measures (NCWM)
Adoption Date: July 2025 Annual Meeting
Corporate Name Change Effective: August 13, 2024
Amendments: Amended 2019 and 2024
Introduction Added: 2015
Subject: Compliance testing of net content statements on packaged goods
Measurement Systems Referenced: International System of Units (SI); U.S. customary units
Legal References: Metric Conversion Act of 1975; Public Law 100-418; Federal Fair Packaging and Labeling Act (FPLA); 15 U.S.C. 205
Primary Audience: Government officials; weights and measures agencies
Secondary Audience: Commercial and industrial establishments packaging, distributing, and selling commodities
Enforcement Effective Date: January 1 of the year following adoption unless otherwise specified
Publication Policy: New edition issued after significant changes; minor amendments published as notices
Price: 8 / 10 USD
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