Analytical method and device containing a fleece layer
AssigneeBoehringer Mannheim GmbH
InventorsRolf Lerch, Heinz Macho
Life of this patent
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Abstract
An analytical device is used for the determination of an analyte in a liquid sample. The device includes a fleece layer including fleece material and polyester fibers, and a reagent for determining an analyte. The reagent is for entering into a detectable reaction with the analyte. The polyester fibers are heat-meltable copolyester fibers containing terephthalic acid, isophthalic acid, and 1,4-butanediol.
Claims15
An analytical device for the determination of an analyte in a liquid sample, said analytical device comprising:
- a fleece layer including fleece material and polyester fibers;
- and
- a reagent for determining an analyte, by entering into a detectable reaction with the analyte;
- wherein the fleece material is not heat meltable and the polyester fibers are heat-meltable, and are copolyester fibers containing terephthalic acid, isophthalic acid and 1,4-butanediol.
A method for the determination of an analyte in a liquid sample, comprising the steps of:
- providing an analytical device comprising:
- a fleece layer including fleece material and polyester fibers;
- and
- a reagent for determining an analyte, said reagent being capable of entering into a detectable reaction in the presence of the analyte;
- wherein the fleece material is not heat meltable and the polyester fibers are heat-meltable, and are copolyester fibers containing terephthalic acid, isophthalic acid and 1,4-butanediol;
- contacting said fleece layer with said liquid sample;
- and
- measuring the detectable reaction which occurs as a result of said contacting step to determine at least one of the type and the amount of the analyte.
A method of manufacturing an analytical device, comprising the steps of:
- forming a fleece layer having fleece material which is not heat meltable and heat-meltable fibers of copolyester containing terephthalic acid, isophthalic acid, and 1,4-butanediol;
- impregnating said fleece layer with a reagent for the determination of an analyte, said reagent being capable of entering into a detectable reaction in the presence of the analyte.
A method of manufacturing an analytical device, comprising the steps of:
- forming a fleece layer having fleece material which is not heat meltable and heat-meltable fibers of copolyester containing terephthalic acid, isophthalic acid, and 1,4-butanediol;
- and disposing a reagent on an upper surface of said fleece layer, said reagent being for the determination of an analyte and capable of entering into a detectable reaction in the presence of the analyte.
An analytical device for the determination of an analyte in a liquid sample, said analytical device comprising:
- a fleece layer comprising copolyester fibers having a melting point between 100.degree. C. and 220.degree. C. and containing residues of terephthalic acid, isophthalic acid, and 1,4-butanediol, said fleece layer also having at least one supporting fiber which has a melting point of above 230.degree. C.;
- and
- a reagent, said reagent being capable of entering into a detectable reaction in the presence of the analyte.
Dependencies are inferred from the claim text.