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: Arizona DUI Defense Blog

The anatomy of a gas chromatograph

By Lawrence Koplow

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The results produced by a gas chromatograph are usually the difference between innocence and guilt in a DUI case. The prosecution's purported blood alcohol concentration (BAC) is typically the 'end-all be-all' of their case. Let's take a look at how this machine creates such a critical measurement. Big Pictures Thoughts If done properly, gas chromatography is a reliable way to measure the amount of blood in an alcohol sample. However, automobiles are also reliable, but there are still thousands of car wrecks every day. There is no presumption of reliability simply because a gas chromatograph was used. The measurement process has both human components and machine components. All steps in the process must be done correctly for the measurement to be trusted...continue to full post

Full post as published by Arizona DUI Defense Blog on April 16, 2014 (boomark / email).