North Dakota Administrative Code
Title 33.1 - Department of Environmental Quality
Article 33.1-23 - DIVISION OF CHEMISTRY LABORATORIES
Chapter 33.1-23-03 - ENVIRONMENTAL LABORATORY CERTIFICATION PROFICIENCY TESTING
- Section 33.1-23-03-01 - Proficiency testing requirements
- Section 33.1-23-03-02 - Laboratory testing of proficiency test study samples
- Section 33.1-23-03-03 - Reporting results
- Section 33.1-23-03-04 - Restrictions on exchanging information
- Section 33.1-23-03-05 - Evaluation on results
- Section 33.1-23-03-06 - Repeat proficiency tests
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