Boehringer Mannheim Gmbh

Manfred Krause

Gerhard Schindler

Siegfried Notzel

Peter Schafer

Gerd K Schafer

Mathias Neumann

Bernd Klein

Norbert Kaufmann

The invention concerns the use of test strips with a flat, preferably oblong foil which carries a matrix containing a photoactive chromogenic substance to pre-determine the duration of stay in the sun that is possible without sunburn, a test system for this determination containing test strips and a test strip pack, a test strip pack and a method for the pre-determination of the maximum possible duration of stay in the sun without sunburn using the test system.

Use of test strips to determine the UV intensity or to pre-determine the

A test carrier for the analysis of fluids has a test field which is held in a frame and a test application surface for the application of a sample fluid. Sometimes called an 'analysis chip', such devices are suitable for accommodating a test layer pack which has a plurality of layers lying loosely on one another. These devices are thin and allow for low cost manufacturing and simple and efficient handling, and has a base body of a plastic material, with a trough-shaped depression for accommodating the test field therein. A retaining net of a plastic material spans above the depression and the test field.

Test carrier for the analysis of fluids

Test carrier for the analysis of fluids with a frame (2) consisting of at least two parts surrounding a test field opening (6) and with a test field disposed in the test field opening (6). In order to provide such a test carrier with frame with which it is possible to assemble the test field out of several test layers manufactured separately from one another, it is proposed that the test field be designed as a test layer package (7) with test layers (10, 11, 12) resting loosely on one another, the frame (2) comprise two shaped pieces of plastics material, one of which serves as base part (4) and comprises a seat (16) for accommodating the test layers (10, 11, 12), while the other serves as lid part (3) and comprises a bearing surface (17) resting on the topmost layer (10) of the test layer package (7). The lid part (3) and the base part (4) are in addition designed with elastic properties so that the pressure with which the bearing surface (17) presses onto the test layer package (7) is substantially constant in the tolerance range of the thickness of the test field package (7).

Test carrier for analysis of fluids

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Viernheim, Germany

Manfred Krause