The UNIPLATE-T Taper Plate, invented and patented by Analtech, is a unique preparative TLC plate that provides unusually high resolution for a preparative layer. It has a wedge-shaped adsorbent layer, progressing from 300 microns (bottom) to 1700 microns (top). Below the silica layer is a 700-micron-thick pre-absorbent zone provided for easier sample application and higher sample resolution.