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    ASTM E938/E938M-12

    Standard Test Method for Effectiveness of Liquid, Gel, Cream, or Shampoo Insecticides Against Adult Human Lice (Withdrawn 2017)

    Withdrawn Standard: ASTM E938/E938M-12 | Developed by Subcommittee: E35.12


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    Withdrawn Rationale:

    This test method determines the effectiveness of pediculicidal materials in liquid, gel, or cream form, against the adult human louse, Pediculus humanus humanus, the surrogate subspecies for the human head louse (P.h. capitis). (Only gels or creams that liquefy at 32°C [90°F] can be tested).

    Formerly under the jurisdiction of Committee E35 on Pesticides, Antimicrobials, and Alternative Control Agents, this test method was withdrawn in November 2017. This standard is being withdrawn without replacement due to its limited use by industry.

    1. Scope

    1.1 This test method determines the effectiveness of pediculicidal materials in liquid, gel, or cream form, against the adult human louse, Pediculus humanus humanus, the surrogate subspecies for the human head louse (P.h. capitis). (Only gels or creams that liquefy at 32°C [90°F] can be tested).

    1.2 This test method is for the use of those wishing to develop efficacy data on adult lice.

    1.3 This test method consists of five replicates for a statistical comparison of formulations.

    1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the 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.



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    DOI: 10.1520/E0938_E0938M-12

    Citation Format

    ASTM E938 / E938M-12, Standard Test Method for Effectiveness of Liquid, Gel, Cream, or Shampoo Insecticides Against Adult Human Lice (Withdrawn 2017), ASTM International, West Conshohocken, PA, 2012, www.astm.org

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