Patent ID: 8689648

Claim:
An aerosol sampler for impacting particles of a desired size range onto a single collection layer, comprising a self-contained sampler, including: (a) a fan; (b) a pre-classifier having an inlet sized to screen out particles larger than the desired size range; (c) an impactor in a spaced relationship between the pre-classifier and the collection layer; (d) passages through the impactor; (e) single impaction plate for holding the single collection layer; (f) wherein the single impaction plate allows a flow of air over the single collection layer and through openings in the impaction plate outside the collection layer; (g) wherein the passages are sized and shaped, and the space between the impactor and the collection layer, are such that in an air flow caused by the fan, particles within the desired size range will preferentially strike the collection layer and particles smaller than the desired size range will preferentially flow past the collection layer; and, (h) a battery for powering the fan.