FILTRATION, FILTER CHARACTERIZATION, AND METHODS AND APPARATUSES THEREFOR
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United States of America Patent
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May 18, 2017
app pub date -
Nov 14, 2016
filing date -
Nov 13, 2015
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Abstract
Aspects of the disclosure are directed to apparatuses and methods involving filters and detection of operation thereof. As may be consistent with one or more embodiments, an apparatus includes a fixture having mechanical components that hold a filter. Gas flow componentry operates with the fixture to eject particles from the filter by subjecting the filter to gas flow. A flow metering circuit meters the gas flow, and a particulate counter detects the ejected particles.
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