Stable test strips having a water-soluble paper layer and methods for making same
AssigneeBoehringer Mannheim GmbH
InventorsHans Lange, Walter Rittersdorf, Hans-Georg Rey, Wolfgang Werner, Peter Rieckmann
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Abstract
Stable test strips for the detection of components in liquids, for example blood, ketone bodies and nitrates in urine, includes two indicator layers one of which is a water-soluble paper.
Claims13
Stable test strip for the detection of a component in an aqueous liquid comprising two indicator layers containing at least one reagent in each layer, said reagents forming, upon contact with the liquid containing said component, a color detectable throughout said strip, wherein one of said indicator layers is a water soluble paper.
Stable test strip for the detection of blood in urine comprising two indicator layers which are each impregnated with reagents for the detection of blood, said reagents forming upon contact with said blood-containing urine, a color detectable throughout said strip, one of said indicator layers being a water-soluble paper.
Stable test strip for the detection of ketone bodies in urine comprising two indicator layers which are each impregnated with reagents for the detection of ketone bodies, said reagents forming upon contact with the ketone body-containing urine, a color detectable throughout said strip, one of said indicator layers being a water-soluble paper.
Stable test strip for the detection of nitrate in urine comprising two indicator layers which are each impregnated with reagents for the detection of nitrate, said reagents forming upon contact with said nitrate-containing urine, a color detectable throughout said strip, one of said indicator layers being a water soluble paper.
Process for the production of stable test strips for the detection of component materials in an aqueuous liquid, which comprises impregnating two indicator layers individually, each with at least one detection reagent, one of said indicator layers being a water-soluble paper, drying said layers and uniting same to form said test strip.
Dependencies are inferred from the claim text.