Pre-analysis chamber for a flow particle analyzer

Details Pre-analysis chamber for a flow particle analyzer Pre-analysis chamber for a flow particle analyzer

1997-02-25

1998-09-15

Font, Frank G.

Optics: measuring and testing

Sample, specimen, or standard holder or support

Fluid containers

356336, 356338, G01N 110, G01N 1502, G01N 2100

Patent

active

058087370

ABSTRACT:
A pre-analysis chamber having reduced turbulence is provided for a flow particle analyzer. The chamber has a conical diverging section for decelerating sheath fluid flow to form a laminar profile, followed by a conical converging section for accelerating flow. A sample inlet tube is supported in the chamber near the interface between the diverging and converging sections, and terminates in the laminar, accelerated sheath flow. The sample enters the laminar sheath flow to form a discrete sample stream.

REFERENCES:
patent: 3662176 (1972-05-01), Kamentsky et al.
patent: 4660971 (1987-04-01), Sage et al.
patent: 4781459 (1988-11-01), Suzuki
patent: 4790653 (1988-12-01), North, Jr.
patent: 4997275 (1991-03-01), Gaucher et al.
patent: 5007732 (1991-04-01), Ohki et al.
patent: 5030002 (1991-07-01), North, Jr.
patent: 5579107 (1996-11-01), Wright et al.

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