ASTM WK45351

    New Test Method for Quantitative Evaluation of Antibacterial Performance of Porous Antibacterial Treated Articles

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    Developed by Subcommittee: E35.15 | Committee E35 | Contact Staff Manager


    1. Scope

    1.1 To determine the bactericidal, bacteriostatic or bacterial growth inhibition properties of articles treated with an active biocidal agent, samples of porous treated materials, such as textiles or paper, are inoculated with a defined suspension of microorganisms and then incubated. The changes in the size of the bacterial populations on the treated article compared with untreated articles either over time or compared to initial starting levels are used to measure antibacterial properties. 1.2 This method is used for measuring the quantitative antibacterial activity of porous materials that have been treated with a biocide so as to inhibit the growth of bacteria on the treated materials. It is not intended for use in determining the ability of a treated article to sterilize or decontaminate secondary surfaces. This method may be used to measure the ability of the treated material to inhibit the growth of an odor causing organism and can measure both bactericidal and bacteriostatic activity. 1.3 This method shall be performed by individuals experienced and adept in microbiological procedures and in facilities suitable for the handling of the microorganisms under test. 1.4 This standard may involve hazardous materials, operations, and equipment. 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 test method will be used to determine the antimicrobial properties of articles, particularly textiles or non-wovens treated with specific antimicrobial agents. Other such similar standards do exist in the industry, but these methods either offer variables that affect intralaboratory reproducibility or limit the utility of using these methods to demonstrate a variety of end-use performance claims.


    percent bacterial reduction, quantitative antibacterial assay, bactericidal, bacteriostatic, bacterial growth inhibition, porous, textile, treated articles, antimicrobial treated surfaces.

    The title and scope are in draft form and are under development within this ASTM Committee.

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    Work Item Status

    Date Initiated:

    Technical Contact:
    Robert Monticello


    E35.15 (16-01)

    Negative Votes Need Resolution