Experiment with air pressure and atmosphere, vacuum filtering and check for leaks with this economical pump.
Economical pump features a gauge in cm and inches, Hg displaces 725 ml of air. Pump rate of 15 ml Clear tubing is 60cm with 6mm inner diameter.

Experiment with air pressure and atmosphere, vacuum filtering and check for leaks. This economical pump features a gauge in cm and inches, Hg displaces 725 ml of air. Pump rate of 15 ml Clear tubing is 60cm with 6mm inner diameter.