Oklahoma Administrative Code (Last Updated: March 11, 2021) |
TITLE 252. Department of Environmental Quality |
Chapter 302. Field Laboratory Accreditation |
Subchapter 7. Proficiency Testing |
SECTION 252:302-7-3. Initial accreditation
Latest version.
- To gain initial or interim accreditation, a laboratory shall have obtained acceptable results for two consecutive proficiency testing (PT) rounds. Proficiency testing (PT) rounds must have been performed within the last twelve (12) months and at least fifteen (15) calendar days apart from the date of analysis.