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Method and device for precise counting and measuring the particles

DC CAFC
  • US 5,946,091 A
  • Filed: 04/10/1997
  • Issued: 08/31/1999
  • Est. Priority Date: 04/10/1997
  • Status: Expired due to Term
First Claim
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1. A method for counting and measuring particles illuminated by a light beam, said method comprising the steps of:

  • providing a particle detecting system, having a particle monitoring region and including a capillary particle flow system, comprising a plurality of capillary particle flow channels formed by an adequate plurality of capillary particle flow means;

    directing said light beam toward said particle monitoring region so that said particles are monitored in said particle detecting system;

    providing each of said plurality of capillary particle flow means with an appropriate cross-sectional inside dimensions for a passage of an appropriate predetermined size particles;

    providing an intersection of an axis of each of said plurality capillary particle flow means with an axis of said light beam at a point within said monitoring region; and

    sensing a light created by said intersection of said light beam with said particles flowing through at least one of said plurality of capillary particle flow means, and providing an output which is effectively indicative of the size of said particles.

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