7
Manual Sampling
This method can be used when the test subject has a diminished lung capacity
and cannot activate the Automatic Sampling test.
1. Follow steps 1-5 under Automatic Sampling.
2. Instruct the person being tested to breathe in deeply and blow evenly into
the mouthpiece without a break for a minimum of 4 seconds.
3. While the person is blowing and after a minimum of 4 seconds, press the
green button and release.
4. After a few seconds, the measured value will display.
Conducting a Passive Test (No Mouthpiece)
1. Turn the MARK V ON.
2.
When “Please Blow” appears, hold the sample port (mouthpiece opening)
about 4 inches from the subject’s mouth.
3. Have the subject moderately blow towards the mouthpiece holder opening
for several seconds.
4. Press the green button while the subject is blowing.
5. Results will appear on display (e.g. 0.000% or greater).
Notes:
•
If the BAC is 0.000%, the display will be instantaneous. If the BAC is higher than
zero, please wait 3 minutes before performing the next test.
•
Use a new mouthpiece for each test.
•
The interval between two measurements will depend on the alcohol concentration
of the first sample. This interval cannot be shortened by temporarily switching off
the instrument. Please wait 3 minutes before performing the next test.
