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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 28, 2025
All Titles
Title 21
Chapter I
Part 2
Subpart A - Subpart A—General Provisions
§ 2.5 - Imminent hazard to the public health.
§ 2.10 - Examination and investigation samples.
§ 2.19 - Methods of analysis.
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