Vacuum Pump, Without Gauge
Simple hand-actuated vacuum pump with a quick-release valve.
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Demonstrate the effect of a partial vacuum on inflated balloons and other objects with this easy-to-use pump.
The pump removes 15 mL of air with each squeeze of its comfort-grip handle and pulls a vacuum down to 50 mm of mercury.
A release valve lets you release the vacuum without disconnecting the pump from the line.
Includes 30cm of 9mm-ID tubing and instructions. Without gauge.