Mouthpiece features include:
 

• For TruZone^® and TruPeak^® PFM
• Disposable
• 1-Way Valve

TruPeak^® PFM measures the Peak Expiratory Flow (PEF). PEF is the fastest speed at which air is forced out from the lungs after taking a deep breath. This measurement is useful in detecting changes in airways that could signal a worsening of symptoms or an improvement in breathing function for people with respiratory conditions such as asthma or emphysema. Use the Daily Record as instructed and share this information with your physician or licensed health care professional at each visit. Includes:
 

• PFM Instructions
• Daily Record Booklet

TRUZONE^® Peak Flow Meters features:

• Internal indicator and fixed ColorZone^® Tape deliver tamper-proof PEF readings and reliable zone settings
• ColorZone^® Tape identifying zones without calculations and allows the use of an additional fourth zone – unique to the TruZone® PFM
• Clear polymer provides assurance of cleanliness
• Logarithmic scale improves precision and simplifies reading of Peak Expiratory Flow (PEF)
• Unique ergonomic body shape and small size facilitate patient compliance