Abstract: A process for the production of slides with one or more reaction fields, which are bounded by a hydrophobic surface coating and which, for the fixing of the preparations to be examined, are coated with substances having an affinity therefore is characterized in that(a) the regions of at least one surface of the slide which correspond to the reaction fields to be formed are covered with a material which adheres to the surface and which is removable,(b) the entire surface of the slide treated in this manner is coated with a hydrophobic material,(c) the reaction fields are exposed by removal of the covering material, and(d) the exposed reaction fields are coated with the substance having an affinity for the preparations to be examined,and the slides obtained by means of this process.