| 摘要 |
The device according to the invention makes it possible to dispense a plurality of reagents with the aid of a single reagent-dispensing pump via a number of reagent nozzles, a number of reagent intake pipes, a number of rotatable valves whose first outlet in each case can be connected to a reagent nozzle, whose second outlet in each case can be connected to a reagent intake pipe and whose central outlet can be connected either to the first or the second outlet, a three-way valve having a normally open, a normally closed and a common outlet, a normally open outlet being connected to the central outlets of the rotatable valves via a first line and a multiplicity of second lines, while the normally closed outlet communicates with second lines via a multiplicity of third lines and a fourth line, and the common outlet communicates with the reagent discharge which in turn is connected to a wash-fluid discharge via a three-way valve. After an amount of reagent has been dispensed, the first, second, third and fourth lines are washed to avoid mutual contamination of the reagents.
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