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ASTM E100-15

Historical Revision

Standard Specification for ASTM Hydrometers


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1.1 This specification covers glass hydrometers of various scale graduation systems, as required by the ASTM Test Methods in which they are used.

1.2 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 and health practices and determine the applicability of regulatory limitations prior to use.


This specification covers glass hydrometers of various scale graduation systems, as required by the ASTM test methods in which they are used. Hydrometers shall be of the constant-mass, variable-displacement type. Hydrometers shall be made of glass, except for the scale, ballasting material, and the thermometric liquid of thermohydrometers. Material used for ballast shall be secured to the lower part of the body, and no loose material of any sort may be inside a hydrometer. The stem shall be uniform in cross section, with no perceptible irregularities. The preferred shapes for the bodies of hydrometers are presented. Graduation lines and inscriptions shall be in a permanent black marking material, such as India ink. All hydrometers shall be graduated to read correctly where the plane of the level liquid surface intersects the stem. The thermometer shall be of the mercury-in-glass type, unless otherwise specified. Hydrometers shall be inspected, tested, and standardized in accordance with the requirements prescribed.


SDO ASTM: ASTM International
Document Number E100
Publication Date Aug. 1, 2015
Language en - English
Page Count 10
Revision Level 15
Supercedes
Committee E20.05
Publish Date Document Id Type View
May 1, 2019 E0100-19 Revision
May 1, 2017 E0100-17 Revision
Dec. 1, 2015 E0100-15A Revision
Aug. 1, 2015 E0100-15 Revision
May 1, 2014 E0100-14 Revision
Nov. 1, 2010 E0100-10 Revision
May 1, 2005 E0100-05 Revision
Nov. 1, 2003 E0100-03 Revision
Feb. 15, 1995 E0100-95 Revision
Not Available E0100-72R78 Revision
May 1, 2024 E0100-19R24 Reaffirmation
Feb. 15, 1995 E0100-95R01 Reaffirmation