Classically styled water bell spirometer provides the reliability and accuracy required by today's physiology educators. Large, easy-to-read volumetric scale with pointer enables students to measure tidal volume, inspiratory capacity and inspiratory reserve volume, expiratory reserve volume, and vital capacity (up to 9 L). Disposable mouthpieces and plastic 1-way valves assure sanitary conditions for classroom use. Constructed of durable, lightweight HDPE plastic and aluminum for strength and easy portability. Includes instructions, lab manual of student experiments, and 100 disposable mouthpieces.