Cuvette
First Claim
1. A cuvette for taking up at least one fluid and for mixing a fluid with a dry reagent for analyzing a mixture, wherein said cuvette comprises:
- a) at least one capillary first cavity having an inlet and constructed and arranged to take up a fluid by capillary action alone;
b) a first channel having a non-capillary and non-spontaneous fluid transporting function operative only under external influence by application of a centrifugal force on the cuvette;
c) a centrifugation reception cavity communicating with said at least one capillary first cavity via said first channel and constructed and arranged to exert no capillary action;
d) at least one capillary second cavity constructed and arranged to take up fluid by capillary force alone; and
e) a first capillary transporting means projecting into said centrifugation reception cavity, being connected to said at least one capillary second cavity and constructed and arranged to transport fluid by capillary action from said centrifugal reception cavity into said at least one capillary second cavity.
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Accused Products
Abstract
A cuvette for taking up a fluid and mixing the fluid with a reagent for analyzing the mixture consists of a body (10) of glass or polymeric material having a first cavity (12) in which the fluid can be taken up, preferably by capillary action, through an inlet (13), and at least one further cavity (21) exerting capillary force on fluid which is transported from the first cavity (12) into a reception cavity (17) by subjecting the cuvette to centrifugal force. The further cavity (21) preferably exerts capillary force through a wick (19) which does not extend as far as the bottom of the reception cavity (17), and a capillary channel (20). In those cases where more than one further cavity (21) is provided, each such cavity (21) communicates with a further reception cavity into which the fluid can be transported from the cavity (21) by the exertion of centrifugal force. The cuvette may also have cavities for receiving washing or diluting liquid, which are connected in series or in parallel with the cavity (12).
183 Citations
17 Claims
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1. A cuvette for taking up at least one fluid and for mixing a fluid with a dry reagent for analyzing a mixture, wherein said cuvette comprises:
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a) at least one capillary first cavity having an inlet and constructed and arranged to take up a fluid by capillary action alone; b) a first channel having a non-capillary and non-spontaneous fluid transporting function operative only under external influence by application of a centrifugal force on the cuvette; c) a centrifugation reception cavity communicating with said at least one capillary first cavity via said first channel and constructed and arranged to exert no capillary action; d) at least one capillary second cavity constructed and arranged to take up fluid by capillary force alone; and e) a first capillary transporting means projecting into said centrifugation reception cavity, being connected to said at least one capillary second cavity and constructed and arranged to transport fluid by capillary action from said centrifugal reception cavity into said at least one capillary second cavity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification