Portable air-borne bacteria sampler
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United States of America Patent
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Feb 17, 2004
Grant Date -
N/A
app pub date -
Aug 6, 2002
filing date -
Nov 25, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Nozzle openings 15a each including a straight duct portion 15s and a tapered portion 15t are situated at an upstream position of an air flow with respect to the straight duct portion. The nozzle openings are formed in a nozzle plate 15 such that the nozzle openings 15a are arranged in grid, and airborne microorganisms passing through the nozzle plate 15 can be effectively collected to form colonies. A degree of cleanness is measured by counting the colonies visually.
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