In order to prevent contamination of the precious metal equipment when placing it in the furnace or when removing it, conventional crucible tongs are fitted with platinum shoes or with solid platinum tips. If required, the shoes can be extended right up to the pivot of the crucible tongs.
Items of precious metal laboratory equipment are sensitive to mechanical deformation due to their use at high temperatures and the resulting loss of their original hardness. The walls of the crucibles and dishes can become wrinkled after they have been used several times, thus making cleaning more difficult.
The shape can be restored by carefully using our Heraeus Plastic Formers. To simplify the process we produce plastic formers which match the crucible and dish sizes you use.