2013 National Conference on Conference National as adopted by the 97th as adopted by Weights and Measures 2012 and Measures Weights 2013 2013 NISTTechnical Publications Periodical Journal of Research of the National Institute of Standards and Technology—Reports NIST research and development in metrology and related fields of physical science, engineering, applied mathematics, statistics, biotechnology, and information technology. Papers cover a broad range of subjects, with major emphasis on measurement methodology and the basic technology underlying standardization. Also included from time to time are survey articles on topics closely related to the Institute’s technical and scientific programs. Issued six times a year. Nonperiodicals Monographs—Major contributions to the technical literature on various subjects related to the Institute’s scientific and technical activities. Handbooks—Recommended codes of engineering and industrial practice (including safety codes) developed in cooperation with interested industries, professional organizations, and regulatory bodies. Special Publications—Include proceedings of conferences sponsored by NIST, NIST annual reports, and other special publications appropriate to this grouping such as wall charts, pocket cards, and bibliographies. National Standard Reference Data Series—Provides quantitative data on the physical and chemical properties of materials, compiled from the world’s literature and critically evaluated. Developed under a worldwide program coordinated by NIST under the authority of the National Standard Data Act (Public Law 90-396). NOTE:The Journal of Physical and Chemical Reference Data (JPCRD) is published bimonthly for NIST by the American Institute of Physics (AIP). Subscription orders and renewals are available from AIP, P.O. Box 503284, St. Louis, MO63150-3284. National Construction Safety Team Act Reports—This series comprises the reports of investigations carried out under Public Law 107-231, the technical cause(s) of the building failure investigated; any technical recommendations for changes to or the establishment of evacuation and emergency response procedures; any recommended specific improvements to building standards, codes, and practices; and recomendations for research and other approprate actions to help prevent future building failures. Building Science Series—Disseminates technical information developed at the Institute on building materials, components, systems, and whole structures. The series presents research results, test methods, and performance criteria related to the structural and environmental functions and the durability and safety characteristics of building elements and systems. Technical Notes—Studies or reports which are complete in themselves but restrictive in their treatment of a subject. Analogous to monographs but not so comprehensive in scope or definitive in treatment of the subject area. Often serve as a vehicle for final reports of work performed at NIST under the sponsorship of other government agencies. Voluntary Product Standards—Developed under procedures published by the Department of Commerce in Part 10, Title 15, of the Code of Federal Regulations. The standards establish nationally recognized requirements for products, and provide all concerned interests with a basis for common understanding of the characteristics of the products. NIST administers this program in support of the efforts of private-sector standardizing organizations. Order the following NIST publications—FIPS and NISTIRs—from the National Technical Information Service, Springfield, VA 22161. Federal Information Processing Standards Publications (FIPS PUB)—Publications in this series collectively constitute the Federal Information Processing Standards Register. The Register serves as the official source of information in the Federal Government regarding standards issued by NIST pursuant to the Federal Property and Administrative Services Act of 1949 as amended, Public Law 89-306 (79 Stat. 1127), and as implemented by Executive Order 11717 (38 FR 12315, dated May 11, 1973) and Part 6 of Title 15 CFR (Code of Federal Regulations). NIST Interagency or Internal Reports (NISTIR)—The series includes interim or final reports on work performed by NIST for outside sponsors (both government and nongovernment). In general, initial distribution is handled by the sponsor; public distribution is handled by sales through the National Technical Information Service, Springfield, VA 22161, in hard copy, electronic media, or microfiche form. NISTIR’s may also report results of NIST projects of transitory or limited interest, including those that will be published subsequently in more comprehensive form. NIST Handbook 133 Checking the Net Contents of Packaged Goods as adopted by the 97th National Conference on Weights and Measures 2012 Editors: Linda Crown David Sefcik Lisa Warfield Carol Hockert, Chief Office of Weights and Measures Gaithersburg, MD 20899-2600 U.S. Department of Commerce Dr. Rebecca Blank, Acting Secretary National Institute of Standards and Technology Patrick D. Gallagher, Director NIST Handbook 133 2013 Supersedes Fourth Edition, January 2011 Certain commercial entities, equipment, or materials may be identified in this document in order to describe an experimental procedure or concept adequately. Such identification is not intended to imply recommendation or endorsement by the National Institute of Standards and Technology, nor is it intended to imply that the entities, materials, or equipment are necessarily the best available for the purpose. National Institute of Standards and Technology Handbook 133, 2013 Edition Natl. Inst. Stand. Technol. Handb. 133, 2013 Ed. 184 Pages (Nov. 2012) CODEN: NIHAE2 U.S. GOVERNMENT PRINTING OFFICE WASHINGTON: 2012 Internet: bookstore.gpo.gov Phone: toll free (866) 512-1800; DC area (202) 512-1800 Fax: (202) 512-2250 Mail: Stop SSOP, Washington, DC 20402-0001 ISBN 0-16-051249-2 Foreword This handbook has been prepared as a procedural guide for the compliance testing of net content statements on packaged goods. Compliance testing of packaged goods is the determination of the conformance of the results of the packaging, distribution, and retailing process (the packages) to specific legal requirements for net content declarations. This handbook has been developed primarily for the use of government officials. However, it should also be useful to commercial and industrial establishments in the areas of packaging, distribution, and sale of commodities. In conducting compliance testing, the conversion of quantity values from one measurement system to another (e.g., from the metric system to the avoirdupois system) should be handled with careful regard to the implied correspondence between the accuracy of the data and the number of digits displayed. In all conversions, the number of significant digits retained should ensure that accuracy is neither sacrificed nor exaggerated. For this 013 edition of Handbook 133 all dimensions for test procedures, devices, or environments have been rounded to two significant digits (e.g., 2.5 cm to 1.0 in) or to a precision level applicable to the test equipment (e.g., 200 kPa for 25 psi and 35 MPa for 5,000 psi). You are invited to provide online feedback regarding this document at: https://www.surveymonkey.com/s/customer-satisfaction-pub or by e- mail to: [email protected]. iii Committee Members Committee on Laws and Regulations of the 97th Conference Judy Cardin, Wisconsin Raymond Johnson, New Mexico Richard Lewis, Georgia Tim Lloyd, Montana Louis Sakin, Towns of Hopkinton/Northbridge, Massachusetts Associate Membership Committee Representative: Rob Underwood, Petroleum Marketers Association of America Packaging and Labeling Subcommittee: Christopher Guay, Procter and Gamble Canadian Technical Advisor: Lance Robertson, Measurement Canada NIST Technical Advisors: Lisa Warfield, David Sefcik iv Past Chairmen of the Committee Conference Chairman Conference Chairman 41 G. H. Leithauser, MD 69 W. R. Mossberg, CA 42 F. M. Greene, CT 70 E. Skluzacek, MN 43 F. M. Greene, CT 71 D. Stagg, AL 44 G. L. Johnson, KY 72 A. Nelson, CT 45 R. Williams, NY 73 K. Simila, OR 46 J. H. Lewis, WA 74 K. Simila, OR 47 J. H. Lewis, WA 75 S. B. Colbrook, IL 48 J. H. Lewis, WA 76 A. Nelson, CT 49 J. H. Lewis, WA 77 B. Bloch, CA 50 L. Barker, WV 78 F. Clem, OH 51 L. Barker, WV 79 B. Bloch, CA 52 M. Jennings, TN 80 S. Rhoades, AZ 53 W. A. Kerlin, CA 81 L. Straub, MD 54 J. F. Lyles, VA 82 S. Millay, ME 55 J. F. Lyles, VA 83 K. Angell, WV 56 S. D. Andrews, FL 84 K. Angell, WV 57 S. D. Andrews, FL 85 S. Morrison, CA 58 S. D. Andrews, FL 86 R. Williams, TN 59 R. M. Leach, MI 87 P. D’Errico, NJ 60 R. L. Thompson, MD 88 D. Johannes, CA 61 C. H. Vincent, Dallas, TX 89 D. Johannes, CA 62 C. H. Vincent, Dallas, TX 90 J. Gomez, NM 63 J. T. Bennett, CT 91 J. Benavides, TX 64 R. W. Probst, WI 92 J. Cassidy, MA 65 D. I. Offner, MO 93 Vicky Dempsey, OH 66 J. J. Bartfai, NY 94 Joe Gomez, NM 67 J. J. Bartfai, NY 95 Joe Benavides, TX 68 J. J. Bartfai, NY 96 John Gaccione, NY v Table of Acronyms Acronym Term AMAV Adjusted Maximum Allowable Variation ANGW Adjusted Nominal Gross Weight AOSA Association of Official Seed Analysts ASEL Adjusted Sample Error Limit ASTM American Society for Testing Materials International CFR Code of Federal Regulations CGA Compressed Gas Association EPA Environmental Protection Agency FDA Food and Drug Administration FDCA Food, Drug and Cosmetic Act FPLA Fair Packaging and Labeling Act FSIS Food Safety and Inspection