ASTM-E126 › Standard Test Method for Inspection, Calibration, and Verification of ASTM Hydrometers
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Scope
1.1 This test method describes the principles, apparatus, and procedures for the inspection, calibration, and verification of ASTM glass hydrometers. This test method is applicable to ASTM hydrometers and may be used for other general hydrometers of the constant-mass, variable-displacement type.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. The metric equivalents of inch-pound units may be approximate.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Significance and Use
4.1 The purpose of this test method is to establish a common method by which manufacturers, calibration laboratories, and users of hydrometers may inspect, verify, or calibrate them.
4.2 The goal is to provide a standard method that is simple, easily understood, and will produce reliable results.
Keywords
calibration; comparators; hydrometers; reference standards; relative density; specific gravity; surface tension; verification;; ICS Number Code 17.060 (Measurement of volume, mass, density, viscosity)
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Document Number
ASTM-E126-19
Revision Level
2019 EDITION
Status
Current
Modification Type
Revision
Publication Date
May 1, 2019
Document Type
Test Method
Page Count
9 pages
Committee Number
E20.05