The preparation of two types of storable talc TLC plates is described. Talc containing
~0.1% of the organic binder methyl cellulose deposited on glass plates (microscope slides)
and compressed (~4 to 5 kg/cm2 ; 58 to 73 PSI) afforded TLC layers that can be handled
conveniently and can be stored and taken out of the box without damaging the otherwise
Talc layers applied on microscope glass plates from an ethanolic dispersion
which is the common practice proved to be very delicate to handle but could be
manipulated more conveniently if the plates also feature a so called "concentration zone"
composed of gypsum or a gypsum - diatomaceous earth mixture.