(a) Laboratories shall use calibration standards established through the use of reference materials that are either:
- (1) purchased by the laboratory with a certificate of analysis or purity,
- (2) prepared by the laboratory using support equipment that has been calibrated,or
- (3) verified to meet specifications.
- (b) Laboratories shall record the lot number and expiration date of reagents and standards that do not have certificates of analysis.
Added at 28 Ok Reg 1201, eff 7-1-11