dui lawyers in wisconsin
Dui Breath Analyzing Devices: are They Reliable?
For many years now there have been arguments between DUI lawyers and law enforcement about the reliability of drunk driving analyzing devices. Lawyers have said that these analyzing devices are not reliable. They believe that these devices detect other chemicals in the body and mistake them for ethanol, or ethyl alcohol, a compound found in drinks containing alcohol. A person could be found to have a high blood alcohol content (B.A.C.), but in actuality there is none, if very little, ethanol in the body. Breath analyzing devices are not as reliable or accurate as blood tests. However, they have been used accepted by the courts as standard instruments in finding out whether or not someone is indeed intoxicated.
What is interesting about this issue is that these breath analyzing devices are not designed to detect the molecule of ethyl alcohol. Most breathalyzer tests can only detect a small part of that molecule. The breathalyzer test assumes that the methyl group is part of an ethyl alcohol compound. There is a myriad of compounds found on a person's breath. Isn't it possible that the breathalyzer instrument could mistake a combination of these compounds as ethyl alcohol?
It's been found that 70 to 80 percent of compounds found on a person's breath contain methyl groups. Therefore, in order for someone to be convicted for drunk driving, the prosecution must prove that ethyl alcohol was in the body at the time of the breath test. The prosecution must provide proof without a doubt that the ethyl alcohol is responsible for the results produced by the breath analyzing instrument.
Researchers have come to the conclusions that breath alcohol analysis is not sufficient to be used in the courts to charge a person for drunk driving. Also, research has been conducted to prove whether or not breath tests are as reliable as blood tests. In one study, members of the toxicology section of the Wisconsin State Laboratory of Hygiene discovered that only 33 percent of the breath test results correlated with corresponding blood tests. What is worth noting about this study is that in 11 of the cases, the defendant was shown to be intoxicated using one of the tests even though the other tests showed that they were not intoxicated.
So, the question we should be asking ourselves is this: Who actually will gain from these breath analyzing machines? Is is the manufacturers who sell these devices to law enforcement? How do we know that these manufacturers have indeed developed perfect machines? Machines are only as perfect as the humans who have created them. These devices are run by computers and we all know that computers can often break down or have technical issues. So, in essence, can we actually rely on breath analyzing devices?
About the Author
Maria Palma is a freelance writer dedicated to helping people find San Diego DUI lawyers. Get help and information with your San Diego DUI.
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