| 20110159596 | SUBSTANCE DETECTOR - Apparatus for detecting substances in an air sample, the apparatus including: a source of air pressure differential, a cyclone connected to the source of air pressure differential, an air input port connected to the cyclone, to receive the air sample, a substance output port connected to the cyclone, to receive the substances, an input port configured to disperse a finely separated material so that it mixes with said sample, and a detector located at the substance output port, to detect a chemical change in at least one of the substances and the finely separated material. | 06-30-2011 |
