ASTM E126 - 13a

    Standard Test Method for Inspection, Calibration, and Verification of ASTM Hydrometers

    Active Standard ASTM E126 | Developed by Subcommittee: E20.05

    Book of Standards Volume: 14.03


    Buy Standard (PDF)
    7 pages
    $42.00
    Buy Standard (Print)
    7 pages
    $42.00
    Buy Standard + Redline (PDF)
    14 pages
    $50.40

    Historical (view previous versions of standard)


    ASTM E126

    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.

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


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D1265 Practice for Sampling Liquefied Petroleum (LP) Gases, Manual Method

    D1298 Test Method for Density, Relative Density (Specific Gravity), or API Gravity of Crude Petroleum and Liquid Petroleum Products by Hydrometer Method

    D1657 Test Method for Density or Relative Density of Light Hydrocarbons by Pressure Hydrometer

    E1 Specification for ASTM Liquid-in-Glass Thermometers

    E77 Test Method for Inspection and Verification of Thermometers

    E100 Specification for ASTM Hydrometers

    E344 Terminology Relating to Thermometry and Hydrometry

    E2251 Specification for Liquid-in-Glass ASTM Thermometers with Low-Hazard Precision Liquids


    ICS Code

    ICS Number Code 17.060 (Measurement of volume, mass, density, viscosity)

    UNSPSC Code

    UNSPSC Code 41113024(Hydrometers)


    DOI: 10.1520/E0126

    ASTM International is a member of CrossRef.

    ASTM E126

    Citing ASTM Standards
    Back to Top