6 ltr. Capacity with chain compensates counter balance to flat through pulley calibrated to denote volume inlet & outlet tubes stainless steel chamber with corrugated rubber tube and mouth piece.
This spirometer offers so little resistance to the movement of air to and from the subject’s lungs that it does not affect the subject’s respiratory movements.
Features:
6-liter capacity
30 mm ID airways result in nearly 50% greater cross-sectional area than traditional 22 mm bore tubing
A one-way air valve with mica disc construction minimizes resistance
Counterweight minimizes weight of gas holder
For use with the Transducer Interface and the Student Oscillograph
As a teaching device, this spirometer has a number of important extra features.
