Accession Number : ADD003932

Title :   Vapor Clearing of Filter Medium.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Owens,Thomas W

Report Date : 14 Apr 1977

Pagination or Media Count : 9

Abstract : A technique is described for preparing a laboratory slide to determine microscopic particulate characterization by allowing solvents to condense in a controlled manner upon a solvent-soluble filter medium which produces a clearing action rendering the area of interest transparent to light with the trapped particles becoming more visible. A greater contrast between the cleared medium and the particles of interest is achieved because the viewing area is illuminated by transmitted light rather than reflected light.

Descriptors :   *Patent applications, *Microscopy, *Filters, Vapors, Solvents, Solubility, Condensation, Particulates, Opacity, Membranes

Subject Categories : Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE