of instruments developed by inventor Robert Frank Borkenstein in the 1950s.

Origins

Research into the possibilities of using breath to test for alcohol in a person's body dates as far back as 1874, when Francis E. Anstie made the observation that small amounts of alcohol were excreted in breath.

In 1927, Emil Bogen produced a paper on breath analysis. He collected air in a football bladder and then tested this air for traces of

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