This spirometer is disposable and designed to exercise and measure volume flow. Whether you're in pre- or postoperative status, you can exercise your lungs to increase your lung volume by keeping the instrument's inhalation-sensitive ball suspended while inhaling. This spirometer's flow passages vary in diameter, affecting the energy required to raise the ball, which stays suspended as long as you maintain this effort. The flow indicator dial can be adjusted to indicate flow rates in ml/second.
|MANUFACTURER ITEM CODE||BAX001900|
|RETURN RESTOCKING FEE||15%: 30-60 days from date of purchase; FREE within 30 days|
Possibly would help if instructions or a demo video were provided. Seem to leak air as it it is not possible to hold ball at top of tube regardless of dial setting.
Bought this product at recommendation of instructor for increasing control, length, force, etc. of airflow through a trumpet mouthpiece. For this purpose, works very well.