alcohol breathalyzer

An alcohol breathalyzer is a device used to measure the level of alcohol in a person's breath. When a person drinks alcohol, it enters their bloodstream and affects their breath. The breathalyzer estimates the blood alcohol concentration (BAC) by analyzing the breath sample a person exhales. This is done through a chemical reaction that produces a measurable electrical signal. Law enforcement often uses breathalyzers to determine if someone is over the legal driving limit. They are important tools for promoting road safety and preventing drunk driving.