Patent ID: 8474335

Claim:
A gas sampler device comprising: a top plate having a vent plate with a plurality of at least 100 holes, each hole having a diameter of less than 0.01 inches, and the plurality of holes comprising less than 0.5% of the vent plate; a bottom plate having a top surface and a receiving portion at the top surface for receiving a dish, the top plate and the bottom plate forming an enclosure; a center well formed in the top surface of said bottom plate; a plurality of elongated slots formed in the top surface of said bottom plate, said plurality of elongated slots extending outward from said center well beyond the receiving portion a ridge projecting upward from the top surface of said bottom plate, said ridge defining the receiving portion; and an air port configured to draw gas into the enclosure through the plurality of holes in said top plate to impinge on the dish, wherein the plurality of elongated slots extend into said ridge.