kf94

/K F/
noun
  1. 1

    (uncountable) An air particulate filtration standard originating in the Republic of Korea, South Korea, which requires filtration of 94% of air particulates.

  2. 2

    (countable) Ellipsis of KF94 mask, a facemask using a filter conforming to the standard.

  3. 3

    (countable) Ellipsis of KF94 filter, a filter implementing the standard.

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