Abstract: The present invention relates to the laser inscription of a flexible inner support layer of a multilayered support unit, which is distinguished by the fact that the laser inscription of the inner support layer is carried out through one or more flexible outer laser-inactive support layers which are separate or can be separated from one another.

Abstract: The present invention relates to the laser inscription of a flexible inner support layer of a multilayered support unit, which is distinguished by the fact that the laser inscription of the inner support layer is carried out through one or more flexible outer laser-inactive support layers which are separate or can be separated from one another.

Abstract: The invention relates to a method for the bioautographic detection of fungicides, in which a developed thin-layer chromatography plate is incubated with a fungal suspension, and zones of inhibition which arise are detected during the fungal growth by fluorescence extinction or by means of optical brighteners.

Abstract: Novel separation materials for thin layer chromatography are disclosed; these consist of a support and a separation medium layer and are obtainable by the following process steps: a) cleaning of the support; b) application of a liquid film comprising a polysilicic ester to a support; c) introduction of the support with the liquid film into an atmosphere which effects hydrolysis and further polymerization of the polysilicic ester; d) hydrolysis and further polymerization of the polysilicic ester at constant temperature; e) washing of the silica layer; f) drying of the silica layer. The silica gel surface of the separation material of the invention can be modified by means of separation effectors.