What does HEPA stand for and where does it come from?

HEPA, which stands for High Efficiency Particulate Air, is an efficiency standard for air filters.

HEPA filters were first created during World War II, to enhance the filtration process of gas masks. Later they were used to prevent the spread of radioactive contaminants floating in the air. Over the decades, the HEPA filters evolved and started to be used in various high technology industries such as aerospace, manufacturing that require contamination control, hospitals, homes and vehicles.

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