Hand Operated Vacuum Pump, Experiment with air pressure and atmosphere, vacuum filtering and check for leaks, Each

Details

This economy blue handheld vacuum pump features a gauge that measures in inches and Hg, and comes with a 19.5" tube that has an inner diameter of 6mm. It displaces 725 ml of air and has a pump rate of 15 ml. The rubber O-ring will roll into the cylinder at 20 Hg after approximately 10 pumps; it can be disassembled for servicing and oiling when needed. This pump is ideal for experimenting with air pressure, atmosphere, vacuum filtering, and leak checks. It can reach up to 29mmHg, but note that it's not designed for heavy continuous pumping or automotive use.