Figure 63 : This concept made Asian experts crazy at a Pittsbourgh conference but could not succeed commercially (inner company disagreements) The book about HPPLC exists only in German language R. E. Kaiser, Einfuehrung in die HPPLC, (Introduction into High Pressure Planar Chromatography, in German), Dr. Alfred Huethig Verlag GmbH (1978), ISBN 3-7785-1563-2.