I’ve written repeatedly in the past about the inaccuracy and unreliability of the various breath machines used to estimate blood alcohol concentrations.  See, for example, How Breathalyzers Work (and Why They Don’t), Why Breathalyzers Don’t Measure Alcohol and Breathalyzer Inaccuracy: Testing During the Absorptive State.  I’ve also pointed out how our laws now ignore scientific truth and presume that the [...]

Read the complete post at http://www.duiblog.com/2008/04/20/the-sacred-breathalyzer/