Spirometer

Description

Instructions For Use:
1. Place the device at mouth level, exhale normally before inhaling.
2. Inhale thoroughly until lifting the three balls (if possible).
3. Hold inspiration as long as possible.
4. Remove the mouthpiece and exhale.
5. Repeat the process.
6. Refer package leaflet for cleaning instructions.
7. Ball to chamber description:
Green  600cc/sec
Yellow 900cc/sec
Red      1200cc/sec