Allen Johnson DQ'd?

Jared Jordan · 09-18-2010, 05:07 PM

They're very close. A breath testing machine measures deep lung alcohol. One of the ways that your body burns off alcohol is through the tissue at the bottom of your lungs. To get a good sample, you have to exhale completely. The machine takes the alcohol it detects in the lungs via a fuel cell. When alcohol hits the fuel cell it converts into electricity from which the machine calculates a blood-alcohol content based on an assumed partition ratio (lot of argument about whether this is fair if anyone's interested in some extra reading).

Not sure how the private firm does it, but in order for the BAC results of a breach machine to be admitted in California courts, they have to be calibrated every 10 days or 150 test subjects, whichever is reached first. Some states also allow you to have an extra sample retained (blood usually) if you want to have an independent laboratory do the testing.

In short, these machines are extremely accurate. Dead nuts.

09-18-2010, 05:07 PM	#11
Jared Jordan Senior Member Join Date: Jun 2004 Location: Modesto, CA Posts: 608 Likes: 189 Liked 498 Times in 114 Posts	Re: Allen Johnson DQ'd? They're very close. A breath testing machine measures deep lung alcohol. One of the ways that your body burns off alcohol is through the tissue at the bottom of your lungs. To get a good sample, you have to exhale completely. The machine takes the alcohol it detects in the lungs via a fuel cell. When alcohol hits the fuel cell it converts into electricity from which the machine calculates a blood-alcohol content based on an assumed partition ratio (lot of argument about whether this is fair if anyone's interested in some extra reading). Not sure how the private firm does it, but in order for the BAC results of a breach machine to be admitted in California courts, they have to be calibrated every 10 days or 150 test subjects, whichever is reached first. Some states also allow you to have an extra sample retained (blood usually) if you want to have an independent laboratory do the testing. In short, these machines are extremely accurate. Dead nuts. __________________ Jared Jordan 9 B/SA 2024 Jeg's D7 All Star - Stock Last edited by Jared Jordan; 09-18-2010 at 05:10 PM.