What is the primary purpose of the Intoxilyzer 9000?

The primary purpose of the Intoxilyzer 9000 is to measure blood alcohol concentration (BAC). This device is specifically designed to analyze breath samples and provide an accurate estimate of the level of alcohol present in a person's bloodstream. By using infrared spectroscopy, the Intoxilyzer 9000 identifies the presence of ethanol in the breath, converting that information into a BAC reading. This is crucial for law enforcement in determining whether a driver is under the influence of alcohol, which can have significant legal implications.

While other options may relate to aspects of substance testing or education, they don't align with the specific function of the Intoxilyzer 9000. For example, it does not identify the type of substance being tested, which would be more relevant for devices used in drug screening. It also does not provide immediate medical diagnostics, as its primary use is law enforcement and not medical assessment. Similarly, enhancing driver education programs does not fall within the capabilities or intended use of this breathalyzer machine.