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This specification covers laboratory weights and precision mass standards including their principal physical characteristics and metrological requirements. Maximum permissible error, magnetic property, density, and surface roughness for each weight shall be within the limits indicated in this specification. Physical characteristics shall be based on construction, design, surface area, materials, magnetism, density, surface finish, weight adjustment, and marking.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.1 This specification covers weights and mass standards used in laboratories, specifically classes 000, 00, 0, 1, 2, 3, 4, 5, 6 and 7. This specification replaces National Bureau of Standards Circular 547, Section 1, which is out of print.
1.3 Maximum Permissible Errors (formerly tolerances) and design restrictions for each class are described in order that both individual weights or sets of weights can be chosen for appropriate applications.
1.5 Weight manufacturers must be able to provide evidence that all new weights comply with specifications in this standard (e.g., material, density, magnetism, surface finish, mass values, uncertainties). Statements of compliance by calibration laboratories during subsequent calibrations must meet the requirements of ISO/IEC 17025, 18.104.22.168 and indicate on the calibration report which sections have or have not been assessed.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
NIST StandardsNIST Handbook 143 State Weights and Measures Laboratories Program Handbook (2007) NISTIR 5672 Advanced Mass Calibration and Measurement Assurance Program for State Calibration Laboratories (2012) NISTIR 6969 Selected Laboratory and Measurement Practices to Support Basic Mass Calibrations (2012) NIST SP 1038 The International System of Units (SI) - Conversion Factors for General Use (May 2006) NIST SP 811 Guide for the Use of the International System of Unit (SI) 2008 Edition NIST Technical Note 1297 (1994) Guidelines for Evaluating and Expressing the Uncertainty of NIST Measurement Results
OIML StandardsOIML D 28 Conventional Value of the Result of Weighing in Air (2004) OIML R111–1e04 Weights of classes E1, E2, F1, F2, M1, M1-2, M2, M2-3 and M3 Part 1: Metrological and Technical Requirements (2004)
BIPM StandardsGUM: JCGM 100:2008 Evaluation of Measurement Data-Guide to the Expression of Uncertainty in Measurement VIM: JCGM 200:2012 International Vocabulary of Metrology-Basic and General Concepts and Associated Terms
EURAMET StandardsEURAMET/cg-18/V. 3.0 Guidelines on the Calibration of Non-Automatic Weighing Intruments (2011)
Additional Reference DocumentsCIPM-2007 Revised Formula for the Density of Moist Air, A. Picard, R. S. Davis, M. Glaser, and K. Fujii
ICS Number Code 71.040.20 (Laboratory ware and related apparatus)
UNSPSC Code 41111505(Calibration weights or weight sets)
ASTM E617-13, Standard Specification for Laboratory Weights and Precision Mass Standards, ASTM International, West Conshohocken, PA, 2013, www.astm.orgBack to Top