5
Encourage the subject to hold their breath until the unit beeps to
start the test. The display will show the blow icon.
The subject should place their lips around the cardboard
mouthpiece and blow gently and continue blowing until their lungs
are completely empty. CO is collected in the last portion of the
breath (alveolar breath).
Results Display
The CO Check+ / CO Check+ Baby will beep and show the final
reading in PPM (parts per million).
By pressing the Select Function key
the reading changes to
%COHb (carboxyhemoglobin).
and then press Select Function key
to display % FCOHb (fetal
carboxyhemoglobin) - (CO Check Baby only)
Pressing
again reverts back to PPM.
