The invention relates to an apparatus for the conduct of chemical reactions, comprising:

    • a reaction slider in which are formed a multiplicity of through holes serving as reaction chambers,
    • a selector slider located on the upper surface of the reaction slider and having at least one continuous control orifice, wherein the selector slider is movable relative to the reaction slider in such a way that its control orifice may be brought into alignment with one of the reaction chambers of the reaction slider, so that a through connection to supply the reaction chamber with a predetermined reagent may be made, and
    • a chemical slider, located beneath the reaction slider and provided with passages to supply chemicals to the individual reaction chambers of the reaction slider.
  • The invention is distinguished on the one hand by a device to apply a predetermined force to the sliders and on the other hand by a valve assembly by means of which chemicals may be supplied to the chemical slider in premixed form.

     
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