Mouthpiece, Disposable, For a more sterile environment, use the cardboard mouthpieces to help eliminate the spreading of contagious material between students
Osmosis and Diffusion Curriculum Learning Module provides Complete set of digital and hands-on resources designed to support teacher instruction. Includes a flip chart, student learning guide, vocabulary set, game, multimedia lesson and hands-on lab investigation
Disposable Bacterial Filter, disposable microbacterial filter significantly reduces need to sterilize your spirometers flow head, 30 mm ID opening allows for an easy, air-tight fit to the flow head