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Improved particulate-sampling filterSmall surface indentations entrain larger and more representative sampling than conventional petri-dish smeared with smooth layer adhesive. Filter is assembled from perforated disk and flat backing plate with sticky surface. Due to design-created currents, particulates come in contact with surface for longer time and have greater probability of being trapped. Filter is useful in air-quality monitoring at industrial sites, in mines, and in and around nuclear power plants.
Document ID
19800000271
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Hoffman, A. R.
(Caltech)
Schneider, H. W.
(Caltech)
Date Acquired
August 10, 2013
Publication Date
September 1, 1980
Publication Information
Publication: NASA Tech Briefs
Volume: 5
Issue: 2
ISSN: 0145-319X
Subject Category
Fabrication Technology
Report/Patent Number
NPO-14801
Accession Number
80B10271
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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