ASTM D3934 - 20

    Standard Test Method for Flash/No Flash Test—Equilibrium Method by a Closed-Cup Apparatus

    Active Standard ASTM D3934 | Developed by Subcommittee: D01.21

    Book of Standards Volume: 06.01


      Format Pages Price  
    PDF 3 $44.00   ADD TO CART
    Hardcopy (shipping and handling) 3 $44.00   ADD TO CART
    Standard + Redline PDF Bundle 6 $52.00   ADD TO CART



    Significance and Use

    5.1 This test method ensures that before the flash test is run the air/vapor space above the specimen has attained a saturation concentration of vapor by using standard closed cups under equilibrium conditions. The saturation concentration of the vapors will be attained at some temperature between that of the liquid and the cooler apparatus lid. However, this temperature will be close to the temperature of the specimen after it has been maintained at the specified temperature for at least a 10-min period. This test method does not provide for the determination of the actual flash point but only whether a specimen does or does not flash at a specified temperature.

    1. Scope

    1.1 This test method covers the determination of whether a liquid complies with the closed-cup flash point requirements in government regulations, or in specifications, or as agreed between the purchaser and the seller.

    1.2 This test method is limited to a temperature range between 0 and 110°C (32 and 230°F).

    1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

    1.4 Warning—Mercury has been designated by many regulatory agencies as a hazardous substance that can cause serious medical issues. Mercury, or its vapor, has been demonstrated to be hazardous to health and corrosive to materials. Use caution when handling mercury and mercury-containing products. See the applicable product Safety Data Sheet (SDS) for additional information. The potential exists that selling mercury or mercury-containing products, or both, is prohibited by local or national law. Users must determine legality of sales in their location.

    1.5 This standard is used to measure and describe the response of materials, products, or assemblies to heat and flame under controlled conditions, but does not by itself incorporate all factors required for fire hazard or fire risk assessment of the materials, products, or assemblies under actual fire conditions.

    1.6 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.

    1.7 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.


    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

    D56 Test Method for Flash Point by Tag Closed Cup Tester

    D93 Test Methods for Flash Point by Pensky-Martens Closed Cup Tester

    D3278 Test Methods for Flash Point of Liquids by Small Scale Closed-Cup Apparatus

    D3828 Test Methods for Flash Point by Small Scale Closed Cup Tester

    D3941 Test Method for Flash Point by the Equilibrium Method With a Closed-Cup Apparatus

    E1 Specification for ASTMLiquid-in-Glass Thermometers

    E1137 Specification for Industrial Platinum Resistance Thermometers

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

    E2877 Guide for Digital Contact Thermometers

    ISO Standard

    ISO 1516 Paints, varnishes, petroleum, and related productsFlash/no-flash testClosed cup equilibrium method Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.


    ICS Code

    ICS Number Code 87.040 (Paints and varnishes)

    UNSPSC Code

    UNSPSC Code 41116301(Flash point testers)


    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/D3934-20

    Citation Format

    ASTM D3934-20, Standard Test Method for Flash/No Flash Test—Equilibrium Method by a Closed-Cup Apparatus, ASTM International, West Conshohocken, PA, 2020, www.astm.org

    Back to Top