ASTM WK67781

    New Test Method for Evaluation of Contact-Mediated Microbial Transference

    (What is a Work Item?)

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


    1. Scope

    1.1 This test method is designed to evaluate the contact-mediated microbial transference on materials. Specimens designed and purporting to reduce microorganism adherence or contamination should be evaluated using this test method. Additionally, this test method can consistently contaminate a wide variety of surfaces to be treated with other downstream processes. 1.2 This test method was designed to quantify initial stages of surface colonization, simulate real-world contamination conditions, be inexpensive, require limited training in practice, and be adaptable to many surfaces or microorganisms. Surfaces are contaminated with inoculated filter paper as a carrier and surface contamination is quantified by sampling with replicate organism detection and counting (RODAC) plates. 1.3 Basic microbiology training is required to perform this test method. 1.4 Units--The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this standard. 1.5 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.


    contamination; staphylococcus aureus; touch-transfer


    The standard fills a gap that exists in quantifying the transfer of microbes to surfaces through contact. This test method was designed to: 1. mimic the natural transmission of microbes, 2. straightforward, with minimal training necessary 3. use materials that are inexpensive and available worldwide, 4. quantitative and reproducible. This test method can be used by anyone wishing to evaluate the touch-transfer of microbes or any surface that claims to limit microbial transfer.

    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:
    Christopher Jones


    E35.15 (20-02)

    Negative Votes Need Resolution