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    ASTM F311 - 08(2020)

    Standard Practice for Processing Aerospace Liquid Samples for Particulate Contamination Analysis Using Membrane Filters

    Active Standard ASTM F311 | Developed by Subcommittee: E21.05

    Book of Standards Volume: 15.03

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    Significance and Use

    4.1 This practice provides for the processing of liquid samples obtained in accordance with Practice F302 and Practices F303. It will provide the optimum sample processing for visual contamination methods such as Method F312, and Test Method F314.

    1. Scope

    1.1 This practice covers the processing of liquids in preparation for particulate contamination analysis using membrane filters and is limited only by the liquid-to-membrane filter compatibility.

    1.2 The practice covers the procedure for filtering a measured volume of liquid through a membrane filter. When this practice is used, the particulate matter will be randomly distributed on the filter surface for subsequent contamination analysis methods.

    1.3 The practice describes procedures to allow handling particles in the size range between 2 and 1000 μm with minimum losses during handling.

    1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

    1.5 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

    D287 Test Method for API Gravity of Crude Petroleum and Petroleum Products (Hydrometer Method)

    D1078 Test Method for Distillation Range of Volatile Organic Liquids

    D1193 Specification for Reagent Water

    D1353 Test Method for Nonvolatile Matter in Volatile Solvents for Use in Paint, Varnish, Lacquer, and Related Products

    D1836 Specification for Commercial Hexanes

    D2021 Specification for Neutral Detergent, 40 Percent Alkylbenzene Sulfonate Type

    F302 Practice for Field Sampling of Aerospace Fluids in Containers

    F303 Practices for Sampling for Particles in Aerospace Fluids and Components

    F312 Test Methods for Microscopical Sizing and Counting Particles from Aerospace Fluids on Membrane Filters

    ICS Code

    ICS Number Code 49.035 (Components for aerospace construction)

    UNSPSC Code

    UNSPSC Code

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

    DOI: 10.1520/F0311-08R20

    Citation Format

    ASTM F311-08(2020), Standard Practice for Processing Aerospace Liquid Samples for Particulate Contamination Analysis Using Membrane Filters, ASTM International, West Conshohocken, PA, 2020, www.astm.org

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