A compact, high-performance cordless vacuum pump perfect for classroom science demonstrations such as the bell-in-jar experiment. Powered by an 18V 5Ah lithium-ion battery, it operates quietly and efficiently without the need for a mains power supply—ideal for flexible use in labs or classrooms.

Great for science demos – including sound in a vacuum (bell in jar)
Cordless convenience – no power outlet needed
Strong suction – reaches 15 microns, 2CFM (56 L/min)
Quiet, safe, and easy to use – brushless motor, only 3.6 kg
Clean operation – anti-suckback design prevents contamination

Complete set with Vacuum pump oil, 18V battery pack and battery pack charger.

An excellent tool for teaching vacuum principles and sound propagation in a fun, hands-on way.