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Lung Demonstration Kit SKU: LNGDEMO
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This simple, yet effective apparatus consists of two sacs which represent the lungs, a rubber membrane which serves as the diaphragm and a clear plastic enclosure which models the chest cavity.

Peak Expiratory Flow Monitor SKU: OMRON PF9940
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The PeakAir Peak Flow Meter is used to measure your “Peak Expiratory Flow Rate,” which is simply the highest speed you can blow air from your lungs