A sample plate for mass spectrometric analysis of a specimen is provided comprising a substrate having an electrically conductive surface, a mask applied to the electrically conductive surface. The mask is applied to the substrate with a rough surface to form at least one sample site. The sample site...http://www.google.de/patents/US20040217276?utm_source=gb-gplus-sharePatent US20040217276 - SAMPLE PLATE FOR MATRIX-ASSISTED LASER DESORPTION AND IONIZATION MASS SPECTROMETRY
