Device for the simultaneous determination of several analytes
First Claim
1. Device for delivery of a liquid sample to multiple withdrawal zones at substantially the same time, said device comprisinga plurality of sample withdrawal zones,fibrous capillary active transport means comprising a sample application zone and a plurality of transport paths connecting respective said sample withdrawal zones to said sample application zone, said fibrous capillary active transport means being free of reagents which react with analytes to be determined, andretardation means provided in at least one of said transport paths and arranged so that liquid sample applied to said sample application zone arrives simultaneously at each of said sample withdrawal zones.
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Abstract
Device for the determination of analytes having a sample application point, several separate sample withdrawal zones that are each connected with the sample application point by one capillary transport path and that have several test elements for the individual determination of analytes wherein a retardation zone is provided on at least one of the transport paths. Material for the capillary transport of a liquid sample defines a sample application zone and a plurality of sample withdrawal zones connected to said application zone by a like plurality of transport paths. At least one of said paths has a retardation zone which assures that liquid applied to said application zone arrives simultaneously at said withdrawal zones, regardless of the lengths of the paths.
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Citations
10 Claims
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1. Device for delivery of a liquid sample to multiple withdrawal zones at substantially the same time, said device comprising
a plurality of sample withdrawal zones, fibrous capillary active transport means comprising a sample application zone and a plurality of transport paths connecting respective said sample withdrawal zones to said sample application zone, said fibrous capillary active transport means being free of reagents which react with analytes to be determined, and retardation means provided in at least one of said transport paths and arranged so that liquid sample applied to said sample application zone arrives simultaneously at each of said sample withdrawal zones.
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10. Method for the determination of several analytes contained in a liquid sample, said method comprising the steps of
providing fibrous capillary active transport means comprising a sample application zone, plurality of sample withdrawal zones spaced from said sample application zone, a plurality of transport paths connecting respective said sample withdrawal zones to said sample application zone, and retardation means provided in at least one of said transport paths and arranged so that liquid sample applied to said sample application zone arrives simultaneously at each of said sample withdrawal zones, and wherein said fibrous capillary active transport means is free of reagents which react with analytes to be determined, applying liquid sample comprising analytes to said application zone, contacting test elements containing reagents to at least two of said sample withdrawl zones, said reagents reacting with said analytes to produce observable results, and determining said analytes in accordance with said results.
Specification