What is a Breathalyzer?

Alcohol can greatly impair someone’s driving abilities, making them more likely to swerve, run red lights, and exhibit other indicators of drunk driving. The police use signs like this to determine whether or not to pull a person over for a sobriety test. One of the most common types of blood alcohol testing devices is called a Breathalyzer.

Breathalyzers, although respected for their accuracy, are not always correct. Thus, if a Breathalyzer incorrectly registers you as having a BAC over .08%, you should not take this charge lightly. To discuss your case, contact a tenacious Dallas drunk driving attorney from the Law Offices of Mark T. Lassiter today at (214) 845-7007.

How It Works

First, as your body processes an alcoholic beverage, you begin to absorb the alcohol into your bloodstream. As you breathe, the blood passes through the tiny membranes in your lungs, where the alcohol evaporates into carbon dioxide. Thus, as you exhale, an amount of alcohol leaves your body that is proportional to your blood alcohol concentration.

With a Breathalyzer, you exhale into a mouthpiece that sends your breath through two vials of chemicals. This goes through a photocell system to generate an electrical reaction. By calibrating the electrical reaction of the sample, law enforcement officials can determine your blood alcohol content.

Contact Us

As technical and precise as Breathalyzers may seem, they can still make mistakes. Thus, even though you may have registered an illegal BAC on a Breathalyzer, you should still talk to an attorney about a possible erroneous reading. Contact a Dallas DWI lawyer from the Law Offices of Mark T. Lassiter at (214) 845-7007 today to learn more about how we may be able to help you.


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