high quality magnesia, MABOR® cupels and blocks are renowned for
their fine surface and constancy in weight and size, and are used by gold
mines, precious metal refiners, alloy melters, assay offices, hallmarking, geological,
test & umpire laboratories worldwide.
provide security and will quickly absorb great amounts of litharge without
cracking or pitting. The prill or bead will not
adhere to their surface. Cupellation
temperature and time are reduced and losses are minimal, achieving higher accuracy and