Particle analyzing apparatus having pressure control system

Details Particle analyzing apparatus having pressure control system Particle analyzing apparatus having pressure control system

1992-12-15

1993-09-14

Coles, Sr., Edward L.

Communications: electrical

Condition responsive indicating system

Specific condition

340607, 356338, 324 714, 73199, G08B 2100, G01N 1502

Patent

active

052453189

ABSTRACT:
A particle analyzing apparatus having sample liquid pressurizing means for pressurizing sample liquid containing therein particles to be examined and supplying it to a portion to be examined, sheath liquid pressurizing means for pressurizing sheath liquid and supplying it to the portion to be examined in such a manner as to surround the sample liquid, a pressure sensor provided in the flow path of the sheath liquid between the sheath liquid pressurizing means and the portion to be examined, pressure control means for controlling the pressure value of the sheath liquid pressurizing means so that the output of the pressure sensor becomes constant, and means for applying light to the portion to be examined and photometering light emitted from the particles to be examined to thereby effect particle analysis.

REFERENCES:
patent: 4178103 (1979-12-01), Wallace
patent: 4325706 (1982-04-01), Gershman et al.
patent: 4367043 (1983-01-01), Sweet et al.
patent: 4503385 (1985-03-01), Haynes
patent: 4525666 (1985-06-01), Groves
patent: 4596036 (1986-06-01), Nogren et al.
patent: 4606631 (1986-08-01), Anno et al.
patent: 4761074 (1988-08-01), Kohsaka et al.
patent: 4781459 (1988-11-01), Suzuki

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