Apparatus for mixing and/or testing small volumes of fluids

Details Apparatus for mixing and/or testing small volumes of fluids Apparatus for mixing and/or testing small volumes of fluids

G - Physics

01

F

G01F 11/04 (2006.01) B01F 15/02 (2006.01) B01J 19/00 (2006.01) B01J 19/18 (2006.01) G01F 11/02 (2006.01) G01N 1/38 (2006.01) G01N 21/25 (2006.01) G01N 21/79 (2006.01) G01N 31/16 (2006.01) C02F 1/00 (2006.01) C02F 1/68 (2006.01) C02F 1/76 (2006.01) G01N 21/11 (2006.01) G01N 33/18 (2006.01)

Patent

CA 2483477

An apparatus and method for measuring a range of small volumes of fluids to a high degree of precision, said apparatus including: a) a single reaction chamber (20); b) a piston (30) operable within said chamber to selectively and precisely vary the internal volume of said chamber; c) a first inlet (41) to said chamber in communication with one or more fluid sources of which a portion of a first fluid of said one or more fluids is adapted to be drawn into said chamber; d) at least one further inlet (43) including a second inlet to said chamber in communication with one or more fluid sources of which a portion of a second fluid of said one or more fluids is adapted to be drawn into said chamber; and e) a sealable outlet (45), wherein said piston is adapted to progressive draw said portion of a second fluid into said chamber until either accurare metering of a volume of said first or second portion of fluid is achived or a reaction involving said first and second portions in said chamber (such as a titration reaction) is completed.

L'invention concerne un appareil et un procédé permettant de mesurer et/ou de contrôler un petit volume de fluide. Cet appareil comprend : a) une seule chambre de réaction (20) ; b) un piston (30) situé dans la chambre permettant de varier de manière précise et sélective le volume interne de cette chambre ; c) une première entrée (41) à ladite chambre en communication avec une ou plusieurs sources de fluide permettant d'amener un fluide à l'intérieur de la chambre ; d) au moins une autre entrée (43) comprenant une seconde entrée à ladite chambre en communication avec une ou plusieurs sources de fluide et permettant d'amener une partie d'un second fluide dans la chambre : et e) une sortie pouvant être étanchéifiée. Ledit piston est conçu pour amener progressivement ladite partie d'un second fluide dans la chambre jusqu'à atteindre une dose appropriée d'un volume des première et seconde parties de fluide ou jusqu'à produire une réaction au moyen des première et seconde parties dans ladite chambre, telle qu'une réaction de titration.

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