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This kit contains four lung volume bags and mouthpieces to use when studying lung capacity with a group of students. Record data from different sets of lungs easily with this kit. The included instruction sheet explains how to use the lung volume bag and explains the measurement process. The lung volume bags are marked in one liter and 1/10 liter graduations.
Lung capacity depends on a number of factors (may include height, age, physical activity, and smoking habits) and varies from person to person, but an average is about 6 liters.
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