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On February 12, 2020, Professor Rudolf Kaiser, the founder of Chromatographia, will celebrate his 90th birthday. In the name of the editors, publisher and readers of Chromatographia—the chromatographic community at large, we thank Professor Kaiser for his tireless commitment to chromatography and wish him good health, success and insatiable creative energy in his professional and private endeavours.

A more detailed account of Professor Kaiser can be found in

Schomburg G. Chromatographia (2000) 51:137. https://doi.org/10.1007/bf02490554

Frank, H. Chromatographia (2010) 71, 181–182. https://doi.org/10.1365/s10337-010-1489-x

Angelé H-P, Struppe HG, Chromatographia (2010) 71, 183–184. https://doi.org/10.1365/s10337-010-1492-2

Petra Russkamp

Editorial Manager Chromatographia, Springer Verlag