Method for sampling aerosols
AssigneeSkc Co., Ltd.
InventorsKlaus Willeke, Sergey A. Grinshpun
Life of this patent
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Abstract
A method for the collection of solid or liquid particles suspended in air (aerosol). The method involves abstracting a quantity of air through a curved, porous plate with evenly spaced holes which are designed to give an accurate sample of the particle content over defined size ranges. This method differs from similar methods in that it (1) provides a minimal bias in the results from the effects of ambient air velocity or direction, (2) provides a more even distribution of particles over a collection medium, and (3) enables exclusion of particles exceeding defined upper size limits.
Claims7
Method of collecting solid and liquid aerosols suspended in air comprising drawing said air through a sieve element having a partial substantially spherical shape with a subtended angle between 90 and 270 degrees and a porosity between 1% and 60%, said sieve element having a concave side and a convex side and including substantially uniformly spaced holes between 10 .mu.m and 1 mm in diameter by applying a vacuum to said concave side of said sieve element, and collecting solid and liquid aerosols which pass through said sieve element in a chamber or on a filter.
Dependencies are inferred from the claim text.