ASTM E3011 - 15

    Standard Test Method for In vitro production of Clostridium Difficile Spores

    Active Standard ASTM E3011 | Developed by Subcommittee: E35.15

    Book of Standards Volume: 11.08


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    Significance and Use

    5.1 This test method describes a procedure for producing spore suspensions of C. difficile ATCC 700792, C. difficile ATCC 43598, or C. difficile ATCC 43599. The spore suspensions may be used in antimicrobial efficacy testing, or other laboratory testing requiring C. difficile spores. A spore crop is considered acceptable if the titer is >8 log10 spores/mL, purity of 95%, and is resistant to 2.5M HCl after 10 min of exposure (see Test Method E2839).

    1. Scope

    1.1 This test method is designed to propagate spores of Clostridium difficile using liver broth.

    1.2 It is the responsibility of the user of this test method to determine whether Good Laboratory Practices are required and follow when appropriate.

    1.3 This test method should only be performed by those trained in microbiological techniques.

    1.4 Units—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 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.

    ASTM Standards

    E2756 Terminology Relating to Antimicrobial and Antiviral Agents

    E2839 Test Method for Production of Clostridium difficile Spores for Use in Efficacy Evaluation of Antimicrobial Agents

    E2895 Test Method for Producing High Titers of Viable and Semi-Purified Spores of Clostridium difficile using a Liquid Medium


    ICS Code

    ICS Number Code 07.100.99 (Other standards related to microbiology)

    UNSPSC Code

    UNSPSC Code


    Referencing This Standard
    Link Here
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    DOI: 10.1520/E3011-15

    Citation Format

    ASTM E3011-15, Standard Test Method for In vitro production of Clostridium Difficile Spores, ASTM International, West Conshohocken, PA, 2015, www.astm.org

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