Particle detection method for detection of contaminating particl

Details Particle detection method for detection of contaminating particl Particle detection method for detection of contaminating particl

1996-06-07

1997-12-02

Font, Frank G.

Optics: measuring and testing

By inspection with agitation or rotation

Of container contents

250223B, G01N 2190

Patent

active

056942214

ABSTRACT:
A method, and device for automated non-destructive deterministic inspection of solutions in transparent containers for particle contamination, comprising the steps of pre-positioning particles in a zone distant from the vertical spin axis, specifically by tilting of the container; rapidly rotating the solution container; suddenly stopping the container, wherein particles within the solution, continue in motion; illuminating the container, while the particles are in motion, whereby particles within the container detectably reflect or block light. The container is tilted, prior to the spinning, by an acute angle ranging from 5.degree. to 85.degree., from a normal concentric vertical spin axis of the container, whereby effects of gravity are utilized to affect settling of particles to provide improved uniformity of spin energy transfer to the contaminating particles within the container, wherein tilting of the container, results in gravity providing sectoral positioning of the contaminating particles to the lowest portion of the container. Settling of particles is estimated according to Stokes Law, prior to illumination inspection. Spinning of the container is either while the container is in the vertical or tilted position.

REFERENCES:
patent: 3627423 (1971-12-01), Knapp et al.
patent: 3830969 (1974-08-01), Hofstein
patent: 3914058 (1975-10-01), Knapp et al.
patent: 3966332 (1976-06-01), Knapp et al.
patent: 4209802 (1980-06-01), Fogg et al.
patent: 4676650 (1987-06-01), Bjorndal et al.
patent: 5365343 (1994-11-01), Knapp
patent: 5523560 (1996-06-01), Manique et al.

Affiliated with

Also associated with

Rating

Particle detection method for detection of contaminating particl does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Particle detection method for detection of contaminating particl, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Particle detection method for detection of contaminating particl will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-805900