Resumen de Trick of the trade: Using vauum food sealers as a low-cost vacuum pump
A vacuum pump provides many entertaining, educational, and attentiongetting demonstrations and experiments at all levels. Most pumps, however, are expensive, heavy, and noisy, which may limit their availability both in the classroom and for the independent experimenter. The proliferation of inexpensive vacuum food sealers removes many of the barriers to performing many vacuum demonstrations.
