5
3. Read the results
The %BAC results are displayed on
the LCD for about 5 seconds after
the reading is taken. The results then
flash for a few seconds until the unit
turns off automatically.
The results are shown in increments
of 0.01, ranging from 0.00 to 0.12.
Results greater that 0.12 %BAC are
displayed as “
+.12
”.
Understanding the results
The BAC (Blood Alcohol Concentration)
represents the amount of ethyl alcohol in
a given volume of blood. For instance,
having a %BAC of 0.10 means that a
person has 1 part alcohol per 1,000 parts
blood in the body.
The most commonly used measurements
are grams of ethanol per milliliter of
blood (g/ml), used in the United States
(also expressed as %BAC) and milli-
grams of ethanol per milliliter of blood
(mg/ml), used in much of Europe (also
expressed as promille).
For example, a reading of 0.05 %BAC
on the
AlcAlert
is the same as 0.05 g/ml
or 50 mg/ml or 0.5 g/l or 0.5 promille.
