Heart and Lung kit, learn about the basic anatomy of the circulatory and respiratory systems by measuring lung volume, making heart and lung models, and designing a working stethoscope, great introduction to the world of human physiology
Test Tube, PYREX* 3mL, 10x75mm, are made from special tubing to give the optimum wall thickness. They are well annealed, resistant to heat and chemically stable. These tubes have a white marking spot. Beaded rims are fire-polished.