14-Piece Manual Spirometry Lung Volume Kit

This 14-piece manual spirometry set is designed for studying lung volume during the respiratory cycle. The kit includes 4 mouthpieces, 4 plastic bags calibrated to 6 liters, and 6 elastic mouthpiece holders. Students can investigate how factors such as age, diaphragm strength, and elasticity affect lung capacity. Average lung capacity is approximately 6 liters, though individual volumes vary based on respiration depth, ethnicity, gender, age, and body composition. Mouthpieces are washable and disinfectable. Replacement mouthpieces and bags are available separately. For educational or demonstration use only; do not use to diagnose any medical condition.