Ultra-low particulate air

ULPA is an acronym for "Ultra Low Penetration Air (filter)" An ULPA filter can remove from the air at least 99.999% of dust, pollen, mold, bacteria and any airborne particles with a size of 100 nanometres (0.1 µm) or larger.

A number of recommended practices have been written on testing these filters, including:

单词	ULPA
释义	ULPA 英语百科 Ultra-low particulate air ULPA is an acronym for "Ultra Low Penetration Air (filter)" An ULPA filter can remove from the air at least 99.999% of dust, pollen, mold, bacteria and any airborne particles with a size of 100 nanometres (0.1 µm) or larger. A number of recommended practices have been written on testing these filters, including:
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