Peak Flow meter

Product Description

1. Make sure that the indicator or pointer is set to zero.
2. Take a deep breath.
3. Put the flow meter in the mouth with the tongue down, out of the way of the mouthpiece, and close the lips around the mouthpiece.
4. Blow out hard and fast. The indicator will move in response to the exhalation.
5. Check the number on the scale next to the pointer or indicator. This is the peak expiratory flow.
6. Move the indicator back to zero and repeat twice more.
7. Record the best of the three attempts in a chart or notebook.
8. Measure