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A breath tester is used to determine the blood alcohol content one has when a police officer suspects a person of drinking and driving. It is more commonly known as a breathalyzer.

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Q: What is the main purpose of a breath tester?
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Does the alcohol breath tester work?

"Yes alcohol breath testers work. You breath into a breath tester and it reads the alcohol content of your breath. Cops can pull over people and test them to see if they are drunk, and can arrest you if you are."


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