Absorbent paper for liquid sampling and impregnated paper calibrators and controls
First Claim
1. An absorbent paper piece having a plurality of sample zones adapted to receive a liquid sample, said paper piece comprising:
- an absorbent paper piece having a plurality of sample zones, each said sample zone defined by a respective perimeter, and each said sample zone having a perforation, said perforation comprising a series of elongated cuts, each of said cuts block capillary flow across said gap, extending substantially around said perimeter, so as to substantially obstruct the capillary flow of said liquid sample from one of said sample zones having an other sample zone adjacent thereto, to said other sample zone.
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Accused Products
Abstract
The present invention is an absorbent paper piece having a plurality of samples zones adapted to receive a liquid sample. The paper comprises an absorbent paper piece having a plurality of sample zones, each sample zone having a perforation extending substantially around its perimeter, so as to substantially obstruct the capillary flow of the liquid sample from one of the sample zones having an there sample zone adjacent thereto, to the other sample zone. It is preferred that the absorbent paper piece be provided with barrier perforations interposed between adjacent sample zones, so as to provide a gap between the sample zones as an additional capillary flow barrier. The absorbent paper piece may be adapted to hold any desired sample in liquid form such as laboratory reagents, and biological samples, such as blood samples (here used to include blood, products or components of blood, and blood hemolysate). The blood or blood products may also be arrayed in a series of sample zones for purposes of control and calibration, in accordance with practices known in the art.
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Citations
23 Claims
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1. An absorbent paper piece having a plurality of sample zones adapted to receive a liquid sample, said paper piece comprising:
an absorbent paper piece having a plurality of sample zones, each said sample zone defined by a respective perimeter, and each said sample zone having a perforation, said perforation comprising a series of elongated cuts, each of said cuts block capillary flow across said gap, extending substantially around said perimeter, so as to substantially obstruct the capillary flow of said liquid sample from one of said sample zones having an other sample zone adjacent thereto, to said other sample zone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An absorbent paper piece having a plurality of samples zones adapted to receive a blood product sample, said paper comprising:
an absorbent paper piece having a plurality of sample zones, each said sample zone defined by a respective perimeter, and each said sample zone having a perforation extending substantially around its said respective perimeter, so as to substantially obstruct the capillary flow of said blood sample from one of said sample zones having an other sample zone adjacent thereto, to said other sample zone;
at least one of said sample zones containing said blood product sample.- View Dependent Claims (22, 23)
Specification