What does the Intoxilyzer 9000 utilize to analyze breath samples?

The Intoxilyzer 9000 uses infrared spectroscopy to analyze breath samples. This technique is effective for detecting and measuring the concentration of alcohol in the air breathed out by a person. Essentially, the device shines infrared light through a breath sample, and specific alcohol molecules absorb certain wavelengths of this light. By measuring how much light is absorbed at these wavelengths, the Intoxilyzer can determine the amount of alcohol present in the breath sample. This method is chosen due to its reliability, speed, and efficiency in breath alcohol testing.

In contrast, gas chromatography is a laboratory technique that separates chemical mixtures but is not used in the Intoxilyzer for breath analysis. Mass spectrometry, while a powerful analytical technique that allows for detailed molecular analysis, is not employed in the breath-testing process of the Intoxilyzer. Ultrasonic waves are used in various applications, but breath analysis does not typically involve this method. Thus, infrared spectroscopy stands out as the correct choice due to its specific application in the Intoxilyzer 9000.