Figure 15 : Worst case sampling / sample position. Is the sample lost ? Not at all. In the figure above are 7 spots, the one right down is used for the plate identification. This is a waste HPTLC plate already used to check for non solvable materials. The left long brown bow is a plate clean up mix of substances from the last methanol flush. The plate center is partially damaged from a too heavy contact with a metal capillary. The spots have been positioned by a micro brush 00 and a micro brush no.1. Click to the next figure 16. (right arrow icon upper figure part)
