A peak flow meter is an inexpensive ... How Do I Determine My "Personal Best" Peak Flow Number? The "personal best" peak expiratory flow (PEF) is the highest peak flow number you or your child ...

OMRON light Personal Peak Flow Meter is used for accurate monitoring of Peak Expiratory Flow in L/min. The PFM20 enables an easy, user-friendly therapy management for doctor and patient similarly.

A peak flow meter is sensitive enough to detect these ... The green zone measures 80% to 100% of your highest reading. It's your personal best and the zone you should be in each day.