Peak Flow Meter

HOW TO USE THE PEAK FLOW METER

Step I Slide the indicator to zero (0).
Step II Stand up and take a deep breath, then clasp your lips around the mouth piece of the instrument.
Step III Now blow out as hard and as rapidly as you can into the mouth piece.  (Do not put your tongue into the mouth piece hole.) (Do not obstruct the indicator with your fingers.)
Step IV Read the value as indicated by the instrument.

Please note down the best of three readings. 

PeakFlowMeter