Electret filters: Determination of the electrostatic enhancement factor of filter media (NT VVS 117)

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  • Report #: NT VVS 117
  • Approved: November 1997
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This Nordtest method is intended to be used in the testing of fibrous filter materials, The purpose of the test is to determine whether the efficiency of a filter material is dependent on the electrostatic removal mechanism and to provide quantitative information about the importance of the electrostatic removal mechanism.