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Breathalyzer

Breathalyzer


A breathalyzer is a device for estimating blood alcohol content (BAC) from a breath sample.

Breathalyzer is the brand name (a genericized trademark) for the instrument that tests the alcohol level developed by inventor Robert Frank Borkenstein. It was registered as a trademark on May 13, 1954, but many people use the term to refer to any generic device for estimating blood alcohol content.