Wolfgang Schwack | Authors


Planar Chromatography — Back to the Future?

Planar chromatography celebrates its 70th birthday. The technique dates back to 1938 when, at the Pharmaceutical Institute in Kharkov, Ukraine, N.A. Izmailov and M.S. Shraiber first devized a circular thin-layer chromatogram,1 which was called spread layer or spot chromatography at the time.