Put the prepared chromatographic tank until the solvent comes up from the top of the plate, about 1-2 cm tlc matches pencil to mark the distance the solvent moves.
Introduction to chromatographic tank prepared marked until the solvent up away from the top edge of the TLC plate is approximately 1-2 cm. pencil stroke is the distance that is solvent motion.
Put the prepared chromatographic tank marked until the solvent, away from the edge of the top of the plates TLC approximately 1 - 2 cm. on the scale is marked in pencil, the distance solvent moved