Figure 20 : The work board is in accurate horizontal position. The HPTLC plate edges contact completely the three position rods. The plate position is fixed by a adhesive paper tape. The cover glass plate is moved to the three aluminium rods and positioned onto the plate gently. If the next step is start of a chromatographic run, the mobile phase bottle should already sit in its 5 mm center hole after its wick could reach flow equilibrium on a waste plate. Directly from there the complete coverplate plus bottle is moved quickly to its next place shown above.