120-00011 Rev. New
Halimeter
PLUS User Manual
7/15/2020
15
3) When ready to collect sample, the end of the sample straw should be inserted
into the patient’s mouth at a depth of approximately 1-2 inches (25-50mm)
resting on the back of the tongue. The lips should be almost closed allowing for
a slight gap between the lips and the sample straw.
DO NOT PRESS THE LIPS
OR TEETH DOWN ON THE SAMPLE STRAW.
4) Breathing should continue THROUGH THE NOSE during sampling allowing
sample to be drawn from the mouth by the Halimeter
PLUS pump rather than
forced in by the lungs.
5)
DO NOT BLOW INTO THE SAMPLE STRAW AS THIS WILL AFFECT
SAMPLE ACCURACY.
The flow indicator should be monitored by the individual
supervising the breath test to ensure that the flow rate stays at approximately
200 ml/min
and that it is not increasing or fluctuating as a result of the patient
breathing or blowing into the sample straw.
6) Typically, the ppb level will rise during the sample period and reach a peak value
after which the value will begin to fall. When the sample ppb value begins to
decrease, the sample straw should be removed from the mouth and set down
until the next sample period at which point the sequence will be repeated.
