Patent ID: 7205152
Filing Date: 2007-04-17
Classification: G01N,Y10T

Abstract:
1. A recirculating method for detecting contaminants in and around at least one object, comprising the steps of: loading a perforated container with a plurality of objects; enclosing said perforated container within a housing forming an ambient air barrier; providing an air stream; rotating said perforated container for causing said objects to emit particles which may be thereon or therein into the air stream; sampling said air stream; testing the sampled air stream for contaminants at a testing location; and providing an indication when a contaminant is detected; removing any contaminants in the air stream; recirculating the air stream to again entrain particles emitted from the objects; said air stream being provided to the center of the container where it entrains emitted particles and the air stream is directed past the testing location and the air stream is then redirected to the center of the container.