Intra-liquid particle classification apparatus using light scatt

Measuring and testing – Particle size

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

7386412, 7386421, G01N 1500

Patent

active

055178707

ABSTRACT:
A liquid sample is sucked from a staining vessel by a first sampling nozzle and the liquid sample is discharged into a flow cell unit, the liquid sample being supplied to the staining vessel by a second sampling nozzle so as to be stained in the staining vessel in advance. When the liquid sample is being discharged through the first sampling nozzle, a sheath liquid is supplied to a flow cell so that the sheath liquid flows with the liquid sample included therein. In this condition, passage of particles in the flow cell is detected by an optical system for detection at a still frame image pick-up position, and after a predetermined delay time based on the detection, strobe light is radiated so as to pick up a still frame image due to the scattered light to thereby perform classification and counting of the particles. Foreign matter in the liquid sample discharged from the sampling nozzle is caught by a filter and exhausted by the sheath liquid which overflows to the upper portion of the filter after completion of discharge of the liquid sample from the sampling nozzle. Bubbles in the flow cell are removed through an air vent and bubbles in the sheath liquid are removed after once reserved in an air vent chamber. Thus, foreign matter/bubbles in the liquid sample/sheath liquid can be prevented from entering the flow cell unit to make it possible to perform testing with high accuracy without lowering testing efficiency.

REFERENCES:
patent: 3583230 (1971-06-01), Patterson
patent: 3600953 (1971-08-01), Isreeli et al.
patent: 3669542 (1972-06-01), Capellaro
patent: 3740143 (1973-06-01), Groner et al.
patent: 3942360 (1976-03-01), Wada
patent: 4003708 (1977-01-01), Taguchi et al.
patent: 4240429 (1980-12-01), Shackelford
patent: 4290011 (1981-09-01), Berg et al.
patent: 4414857 (1983-11-01), Brazhnikov et al.
patent: 4496657 (1985-01-01), Coppersmith et al.
patent: 4564803 (1986-01-01), Loren et al.
patent: 4598596 (1986-07-01), Wiseman et al.
patent: 4781459 (1988-11-01), Suzuki
patent: 4946651 (1990-08-01), Liston et al.
patent: 5079959 (1992-01-01), Miyake et al.
patent: 5088816 (1992-02-01), Tomioka et al.
patent: 5215519 (1993-06-01), Shettigar
patent: 5245318 (1993-09-01), Tohge et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Intra-liquid particle classification apparatus using light scatt does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Intra-liquid particle classification apparatus using light scatt, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Intra-liquid particle classification apparatus using light scatt will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2030708

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.