ASTM E2720 - 16

    Standard Practice for Evaluation of Effectiveness of Decontamination Procedures for Air-Permeable Materials when Challenged with Biological Aerosols Containing Human Pathogenic Viruses

    Active Standard ASTM E2720 | Developed by Subcommittee: E35.15

    Book of Standards Volume: 11.08

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    Significance and Use

    5.1 The efficacy of disinfection technologies can be evaluated on finished products, as well as on developmental items.

    5.2 This practice defines procedures for validation of the aerosol generator, preparation of the test specimen, application of the challenge virus, enumeration of viable viruses, assessing data quality, and calculation of decontamination efficacy.

    5.3 This practice provides defined procedures for creating droplet nuclei that approximate those produced by human respiratory secretions with particular emphasis on particle size distribution and aerosolization media.

    5.4 Safety concerns associated with aerosolizing microbial agents are not addressed as part of this practice. Individual users should consult with their local safety authority, and a detailed biological aerosol safety plan and risk assessment should be conducted prior to using this practice. Users are encouraged to consult the manual Biosafety in Microbiological and Biomedical Laboratories7 published by the U.S. Centers for Disease Control and Prevention (CDC).

    5.5 This practice differs from Test Methods E1052 and E2197 in the presentation of the virus to surface. The aforementioned test methods use liquid inoculum to contaminate carrier surfaces, whereas this practice presents the virus in the absence of water as droplet nuclei.

    5.6 This practice differs from Test Method E2721 because (1) smaller particles are being formed, (2) the droplets will be dried, thus forming droplet nuclei, prior to application to air-permeable materials, and (3) unique equipment is required to create the droplet nuclei.

    1. Scope

    1.1 This practice is designed to evaluate decontamination methods (physical, chemical, self-decontaminating materials) when used on air-permeable materials contaminated with virus-containing droplet nuclei.

    1.2 This practice defines the conditions for simulating respiratory droplet nuclei produced by humans.

    1.3 The practice is specific to influenza viruses, but could be adapted for work with other types of respiratory viruses or surrogates.

    1.4 This practice is suitable only for air-permeable materials.

    1.5 This practice does not address the performance of decontaminants against microbes expelled via blood splatter, vomit, or fecal contamination.

    1.6 This practice should be performed only by those trained in bioaerosols, microbiology, or virology, or combinations thereof.

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

    1.8 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.

    Department of Defense Standards

    CA06PRO411 Method for Evaluating Air Purification Technologies for Collective Protections Using Viable Microbial AerosolsFoarde, K., Heimbuch, B. K., Maxwell, A., VanOsdell, D., Method for Evaluating Air Purification Technologies for Collective Protection Using Viable Microbial Aerosols, Test Operating Procedure (TOP) Under the Army Test and Evaluation Command (ATEC), Edgewood Chemical and Biological Center, Edgewood, Md., 2010 in press.

    EPA Standards

    EPA600/4-84/013(N16) USEPA Manual of Methods for Virology Available from United States Environmental Protection Agency (EPA), Ariel Rios Bldg., 1200 Pennsylvania Ave., NW, Washington, DC 20460,

    WHO Standards

    WHO Manual on Animal Influenza Diagnosis and SurveillanceWebster, R., Cox, N., Stohr, K. WHO Manual on Animal Influenza Diagnosis and Surveillance. World Health Organization, Department of Communicable Disease Surveillance and Response. WHO/CDS/CDR/2002.5 Rev. 1.

    ASTM Standards

    E1052 Test Method to Assess the Activity of Microbicides against Viruses in Suspension

    E2197 Quantitative Disk Carrier Test Method for Determining Bactericidal, Virucidal, Fungicidal, Mycobactericidal, and Sporicidal Activities of Chemicals

    E2721 Practice for Evaluation of Effectiveness of Decontamination Procedures for Surfaces When Challenged with Droplets Containing Human Pathogenic Viruses

    IEST Standards

    IEST-RP-CC003.3 Garment System Considerations for Clean Rooms and Other Controlled Environments Available from Institute of Environmental Sciences and Technology (IEST), Arlington Place One, 2340 S. Arlington Heights Rd., Suite 100, Arlington Heights, IL 60005-4516,

    ICS Code

    ICS Number Code 11.080.99 (Other standards related to sterilization and disinfection)

    UNSPSC Code

    UNSPSC Code 60104000(Biotechnology and bio chemistry and genetics and microbiology and related materials)

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

    DOI: 10.1520/E2720-16

    Citation Format

    ASTM E2720-16, Standard Practice for Evaluation of Effectiveness of Decontamination Procedures for Air-Permeable Materials when Challenged with Biological Aerosols Containing Human Pathogenic Viruses, ASTM International, West Conshohocken, PA, 2016,

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