Okla. Admin. Code § 310:545-1-4Download PDFCurrent through Vol. 42, No. 4, November 1, 2024Section 310:545-1-4 - Certification of laboratory approval [REVOKED]Okla. Admin. Code § 310:545-1-4Amended at 10 Ok Reg 4311, eff 8-1-93 through 7-14-94 (emergency); Amended at 12 Ok Reg 3059, eff 7-27-95