Chiral TLC plates are coated with a reversed phase silica gel, and impregnated with a chiral selector (a proline derivative, DP 31 43 726 and EP 0 143 147) and copper(II) ions. This plate allows for multiple simultaneous separations, a great advantage for routine applications and production control. The TLC plates contain UV254 fluorescent indicator. The UV-absorbing substances appear as dark-blue to black spots on a light - blue background. This analytical layer is bound to a glass support. It has a thickness of 250um and dimensions of 10x20cm. There are 4 plates per pack. Applications include: enantiomer separation of amino acids, N-methylamino acids, N-formylamino acids, a-alkylamino acids, thiazolidine derivatives, dipeptides, lactones, a-hydroxycarboxylic acids