Priprava osnovnih plošč TLC (4.4) za 10 sekund se jih popolnoma potopi v raztopino 0,2 mol/L kalijevega hidroksida (4.5) potem se jih pusti sušiti v digestoriju dve uri in na koncu se jih da v peč na 100 °C za eno uro.
Preparation of basic TLC plates (4.4) are immersed completely, in 0,2 mol/L potassium hydroxide solution (4.5) for 10 seconds, and then left to dry under a hood for two hours and finally, they are placed in an oven at 100 °C for one hour.