1. (a) Authorized personnel. The calibration, or calibration check, may be performed by the operator, a designated member of the law enforcement agency employing the operator, or a third party in accordance with the manufacturer's instructions.
2. (b) Calibration check interval and procedure. Alcohol screening devices approved by these rules shall be checked for calibration accuracy annually. Calibration accuracy shall be within (=/-) 0.005 g/210L of the value of the reference method at the time of the calibration check. Calibration checks shall be performed in accordance with the manufacturer's instructions.
3. (c) Calibration procedure. Calibrations shall be performed in accordance with the manufacturer's instructions when a calibration check falls outside (+/-) 0.005 g/210L of the value of the reference method at the time of the calibration check.

Added at 34 Ok Reg 847, eff 9-11-17