Alcotest 7410 GLC User’s Manual
5
“Ready”
light comes on (below the
“On” light). It is accompanied by a short
audible tone.
6. Attach a new mouthpiece into the
grommet at the top of the device.
7. Instruct the person to blow. The sample
must be of sufficient force and
continuous. Instructions similar to
“Blow long and hard until I tell you to
stop” are appropriate. A proper sample
is indicated by a continuous audible
tone.
8. If a proper sample is provided, the green
light goes out and the tone ceases. This
may take 4 to 12 seconds, depending on
the sample.
9. In 10 - 25 seconds the measured value is
displayed. Note and record the result.
10. Turn off the device by pressing the side
button
twice
.
D. Improper Sample
If the sample was interrupted, too short or
too weak, an
“E0”
indication is briefly
displayed. The
“Ready”
light goes out and
the tone ceases, followed by two short
audible signals. When the
“Ready”
light
reappears, instruct the person to blow again.
No results will be displayed until a proper
breath sample is received.
E. Alcotest 7410 GLC Results
The GLC model gives digital results from
0 to 49 mg%. An “A” is displayed when the
BAC is from 50 to 99 mg% , and an “F”
when the BAC is 100 mg% or higher.
Digital results = 0 to 49 mg%
“A”
= 50 to 99 mg%
“F”
= 100 mg% and
greater
The action a peace officer takes after each
of these test results is discussed in the
chapter on “Law and Field Use of the
Alcotest.”