Smiths Medical Portex Flow Based Incentive Spirometer,Spirometer,20/Case,2000Price: USD154.99 Measure your peak flows and save yourself from an emergency room visit!Smiths Medical Portex Flow Based Incentive Spirometer is a small hand-held tool with a breathing tube and air chamber that is used to measure the air taken into and exhaled by the lungs. It is used when recovering from surgery to help keep lungs active. Other products from H e a l t h P r o d u c t s F o r Y o u |