Preanalysis chamber for a flow particle analyzer

Details Preanalysis chamber for a flow particle analyzer Preanalysis chamber for a flow particle analyzer

G - Physics

01

N

G01N 15/10 (2006.01) G01N 15/14 (2006.01)

Patent

CA 2244207

A preanalysis chamber (10) having reduced turbulence is provided for a flow particle analyzer. The chamber (10) has a conical diverging section (17) for decelerating sheath fluid flow to form a laminar profile, followed by a conical converging section (31) for accelerating flow. A sample inlet tube (44) is supported in the chamber (10) near the interface (20) between the diverging and converging sections, and terminates (43) in the laminar, accelerated sheath flow. The sample enters the laminar sheath flow to form a discrete sample stream.

Une chambre de préanalyse (10) présentant de faibles turbulences est destinée à un analyseur de particules en flux. La chambre (10) présente une partie divergente conique (17) destinée à décélérer le flux de fluide d'enveloppe afin de former un profil laminaire, suivie d'une partie convergente conique (31) destinée à accélérer le flux. Un tube (44) d'entrée d'échantillon est porté dans la chambre (10) près de l'interface (20) entre les parties divergentes et convergentes, et il se termine (44) en un flux d'enveloppe accéléré laminaire. L'échantillon pénètre dans le flux d'enveloppe laminaire pour former un courant d'échantillon discret.

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