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Related Experiment Videos

Inhalation hazard test. Interlaboratory trial with OECD method 403.

H J Klimisch1, J Pauluhn, H W Hollander

  • 1BASF Aktiengesellschaft, Abteilung Toxikologie, Ludwigshafen, Federal Republic of Germany.

Archives of Toxicology
|January 1, 1988
PubMed
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The Inhalation Hazard Test (OECD Method 403) offers a reliable and reproducible alternative to traditional LC50 tests for evaluating chemical inhalation hazards. This validated method is faster, cheaper, and requires fewer animals, making it suitable for industrial hazard assessment.

Area of Science:

  • Toxicology
  • Chemical Safety
  • Regulatory Science

Background:

  • Traditional LC50 tests for inhalation toxicity are resource-intensive and ethically concerning due to high animal usage.
  • There is a need for validated, efficient, and reproducible methods for assessing chemical inhalation hazards in industrial settings.
  • OECD Method 403, the Inhalation Hazard Test, was developed to address these limitations.

Purpose of the Study:

  • To validate the Inhalation Hazard Test (OECD Method 403) across multiple industrial laboratories.
  • To assess the reproducibility and applicability of the test for hazard evaluation of volatile chemicals.
  • To compare the efficiency and animal usage of OECD Method 403 against conventional LC50 tests.

Main Methods:

  • Six industrial laboratories participated in the validation study.

Related Experiment Videos

  • Eight volatile chemicals were tested using OECD Method 403.
  • Inhalation exposure systems and rat strains varied across laboratories to assess robustness.
  • Atmosphere concentrations were monitored, though detailed analyses were deemed unnecessary due to close agreement with nominal values.

    • Main Results:

    • The Inhalation Hazard Test yielded consistent results across all participating laboratories.
    • Variations in inhalation exposure systems and rat strains did not significantly impact test outcomes.
    • Nominal atmosphere concentrations closely approximated analyzed values, simplifying experimental requirements.
    • The test demonstrated high reproducibility and direct applicability to hazard evaluation.

    Conclusions:

    • OECD Method 403 is a validated, reproducible, and robust method for assessing inhalation hazards of volatile chemicals.
    • The Inhalation Hazard Test is a more efficient, cost-effective, and animal-sparing alternative to conventional LC50 tests.
    • This method provides reliable data directly applicable to industrial chemical safety and hazard assessment.