Personal Best Full Range Peak Flowmeter By Personal Best

Wherever personal best goes in the hospital, office, or home it sets a new standard for convenience, compliance, and confidence
With a lightweight, self-contained, portable design that puts peak flow monitoring at your fingertips
For use with 566652 mouthpiece which is a one way valve
Personal best encourages compliance with its comfortable oval mouthpiece and easy-to-use built-in handle