Harbottle Pressure Globe

GSC International 791 Harbottle Pressure Globe The Harbottle Pressure Globe helps students to understand the meaning of fluid pressure and pressure reduction. Simply place a balloon into the opening of the glass Harbottle and stretch the mouth of the balloon over the opening of the bottle. Blow into the balloon and, when it is fully inflated, stopper the bottom hole of the Harbottle. The balloon will stay inflated even though it is open to the atmosphere. This apparatus is an excellent tool for teaching pressure, vacuums, and weather. Includes Harbottle, balloon, rubber stopper, and instructions included. Great for teaching about pressure Includes balloon and stopper Harbottle made from glass Contains Latex ⚠️ Proposition 65 Warning for California Residents: WARNING: This product may expose you to chemicals including styrene and/or bisphenol A (BPA), which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P6