Abstract: The invention relates to a method for determining the ionic strength and/or the specific weight of aqueous liquids and a reagent for this purpose, the composition of the reagent being such that the color change indicating the ionic strength is essentially directly dependent on the specific weight of the liquid to be determined and not on a pH shift.

Abstract: The invention relates to a sampling kit for obtaining, in a rapid and gentle manner, a defined volume of lacrimal fluid for the purpose of reproducibly determining components of the lacrimal fluid.

Abstract: Reagent for determining the ionic strength and/or the specific weight of aqueous liquids and a reagent for this purpose, the composition of the reagent being such that the color change indicating the ionic strength is essentially directly dependent on the specific weight of the liquid to be determined and not on a pH shift.

Abstract: The present invention relates to reagents and processes for the preparation of diagnostics which use a chromogenic redox detection system and whose chromogenic redox detection system essentially remains unaffected by interference from reducing. compounds in the sample material.

Abstract: The invention relates to fluorogenic compounds for the detection of hydrolyzing enzymes and the use of the fluorogenic compounds.

Abstract: The present invention relates to reagents and processes for the preparation of diagnostics which use a chromogenic redox detection system and whose chromogenic redox detection system essentially remains unaffected by interference from reducing compounds in the sample material.

Abstract: The invention relates to fluorogenic compounds for the detection of hydrolyzing enzymes and the use of the fluorogenic compounds.

Abstract: The invention relates to fluorogenic compounds for the detection of hydrolyzing enzymes and the use of the fluorogenic compounds.

Abstract: Chromogenic substrates for the detection of hydrolyzing enzymes, processes for the preparation of these chromogenic substrates and the use of the chromogenic substrates.The quantification of hydrolyzing enzymes for diagnostic purposes has to date been carried out by determination of the amounts of a fluorescent or highly absorbent chromogenic dyestuff liberated in the hydrolytic reaction, detection of which has in part been possible exlusively by instruments or in the neutral to alkaline pH range. After enzymatic hydrolysis, the chromogenic substrates according to the invention lead to highly sensitive and specifically measurable signals regardless of the pH range.Azo dyestuff compounds with the general formulaA--N.dbd.N--B (OR)in which A) and B) have the meanings given in claim 1 andR) is a radical which can be liberated by enzymatic hydrolysis, excluding a carbonyl radical,are provided.After enzymatic hydrolysis, highly sensitively and specifically measurable signals are obtained regardless of the pH range.

Abstract: A solid diagnostic device for the quantitative determination of substances of biological affinity in biological fluids is described. A process is also described in which the biological fluid is brought into contact with a specific functional sector of the device, the fluid migrates through several functional sectors situated beside one another and containing suitable reagent components, and one or more substances of biological affinity are detected in such functional sectors which contain, for each substance to be detected, at least one combination partner of biological affinity, attached to a solid phase.

Abstract: What are disclosed are polysaccharide derivatives of the formula ##STR1## in which n denotes a number from 100 to 12,500 and R denotes hydrogen, a carboxyalkyl or hydroxyalkyl group with 1 to 5 carbon atoms in the alkyl radical or a detectable molecular group, any combination of the (3n+2) R radicals being possible, but at least one R being a carboxyalkyl or hydroxyalkyl group and at least one R being a detectable molecular group, and a process for their preparation and their use for the determination of endohydrolases, in indicator paper and for the detection of metabolites in biological liquids, are described.

Abstract: What are disclosed are a method for detecting substances having a peroxidative effect using a substituted or condensed pyridine, and a diagnostic agent containing a pyridine of this kind.

Abstract: Rapid diagnostic agent comprising an absorbent carrier matrix, a chromogen, a hydroperoxide, a detergent, an activator and a compound of the formula I ##STR1## or a copolymer containing such a compound, and, if appropriate, another protective colloid. A diagnostic agent of this type can be used in a method for detecting, in body fluids and excreta, peroxidatively active substances.

Abstract: A diagnostic agent for the detection of ketones in fluids consisting of an absorbent carrier impregnated with sodium nitroferricyanide, a water-soluble lower amino acid, an alkaline buffer substance, and at least one organic acid, said organic acid serving to form a stabilizing environment around the sodium nitroferricyanide. The improved diagnostic agent may be produced by impregnating the carrier in a first step with an aqueous solution of the buffer substance and the amino acid, in a second step with a solution of an organic acid in an organic solvent and in a third step with a solution of sodium nitroferricyanide and a water-soluble organic acid in an organic solvent.

Abstract: A solid diagnostic device for the quantitative determination of substances of biological affinity in biological fluids is described. A process is also described in which the biological fluid is brought into contact with a specific functional sector of the device, the fluid migrates through several functional sectors situated beside one another and containing suitable reagent components, and one or more substances of biological affinity are detected in such functional sectors which contain, for each substance to be detected, at least one combination partner of biological affinity, attached to a solid phase.

Abstract: A solid diagnostic device for the quantitative determination of substances of biological affinity in biological fluids is described. A process is also described in which the biological fluid is brought into contact with a specific functional sector of the device, the fluid migrates through several functional sectors situated beside one another and containing suitable reagent components, and one or more substances of biological affinity are detected in such functional sectors which contain, for each substance to be detected, at least one combination partner of biological affinity, attached to a solid phase.