What do the calibration check values indicate?

Calibration check values are critical in evaluating the performance of the Intoxilyzer 9000, as they directly relate to the device's accuracy in measuring blood alcohol concentration (BAC) results. These values are obtained during routine checks and are essential for ensuring that the machine is functioning properly and consistently providing valid results.

When these calibration checks are within the established acceptable limits, it confirms that the device can yield accurate and reliable BAC readings, which is paramount in law enforcement situations where such measurements are used as evidence. If the calibration check values are outside these limits, it indicates a potential issue with the machine’s accuracy and may require maintenance or recalibration before further use.

The other options, such as the speed of the testing process, the economic value of the device, and the amount of time taken for each session, are not directly related to the calibration check values, which focus specifically on accuracy rather than performance speed, cost-effectiveness, or session durations.