Get current pricing for Whatman, K6/LK6D Whatman Plates For Thin Layer Chromatography. Included Are 75 K6 Plates (50 - 10 X 20cm, 250um Layer, Cat#4860720, 25 - 20 X 20cm, 250u, Cat#4860820) . Product Category: Lab Equipment, Sub Category: Hplc Systems: