Tlhokahalo ea indasteri e tlase e qalile ho ntlafala haufinyane.Litheko tsa thepa e tala meta-phenylenediamine, cobalt chloride, le cobalt sulfate li nyolohile.

Baetsi ba lidae ba bangata ba fetotse litheko tsa bona.Ha tlhoko ea m-phenylenediamine e ntse e eketseha, litheko tsa lidae tse qhalaneng le resorcinol li tla nyoloha.