| abstract |
1. Process for the carrying out of analytical determinations by mixing and incubating a sample solution with at least one reagent and measuring a parameter in the reaction mixture, whereby the sample solution is transported from an application point to a measurement point, characterised in that one first transports a sample solution to a soluble dry reagent, with at least partial dissolving of the latter, and then further transports to the measurement point and the transport takes place by two different forces, whereby, at least on a part of the transport path, it is brought about by a boundary surface force acting on the solution as a first force which, for the regulation of the transport velocity or transport direction, is superimposed by a centrifugal force and/or pressure force as a second force which, depending upon which transport state of the fluid is to be regulated, is made greater or smaller than the first force. |