Why the Breathalyzers don’t Work Properly »

July 29, 2009

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Here I am giving just one of many examples explaining why the breathalyzers do not work properly. The computers that are inside Breathalyzers what actually do is that they just multiply the amount of alcohol in a DUI suspect’s breath sample 2100 times in order to get the blood alcohol concentration ("BAC").

It happens because they are programmed in such a way that they assume that the suspect has 2100 units of alcohol in his blood for every single unit of alcohol in his breath. This is what we call the "partition ratio". But this ratio is only an average: actual ratios shows variation from as low as 900:1 to as high as 3500:1; if individual ratio is different, then surely the BAC result will be different.

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