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InTrOduCTIOn
The BACTRACK
®
Select S50 Breathalyzer is an alcohol screening
device, used for the detection of alcohol in the breath. The
BACTRACK provides a digital result, displaying an estimate of
the subject’s BAC (Blood Alcohol Content). Before you begin
testing, it is very important to read the entire owner’s manual.
It is also very important to have the instrument calibrated
periodically as recommended on page 12. Failure to do so
may result in readings that are inaccurate.
Alcohol and Its Effects on the Human Body
When a person consumes alcohol, the alcohol is absorbed from
the mouth, throat, stomach and intestines into the bloodstream.
The alcohol in the bloodstream exchanges with air deep in
the lungs. The percent of alcohol in a person’s blood (BAC)
is proportional to the percent of alcohol in a person’s breath
(BrAC). The BACTRACK measures a subject’s deep lung air
alcohol level and converts it to the estimated BAC.
“BAC” means Blood Alcohol Concentration. It is measured in %.
How does alcohol affect my body?
Alcohol is a depressant. It has a relaxing effect on the muscles
in your body. The muscles of your eyes relax and lose focus.
Your eyesight will become fuzzy and you may experience