Vacuum level refers to the measure of pressure in a vacuum system relative to atmospheric pressure. It indicates how much lower the pressure is compared to the surrounding atmospheric pressure. Vacuum levels are typically expressed in units of pressure such as pascals (Pa), torr, millimeters of mercury (mmHg), or inches of mercury (inHg). In practical terms, vacuum levels can be categorized into different ranges: 1. **Low Vacuum**: Approximately 0.
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