Crucibles are made of materials which can withstand extremely high temperatures such as porcelain, quartz, high-alumina, platinum, nickel, and glass. Lids (or covers) are typically loose fitting to permit gases to escape during heating. We offer crucibles in different capacities and shapes including high form, low form, wide form, straight wall, and conical. We also offer ceramic marking ink, crucible tongs, and crucible racks. When selecting a crucible, know the capacity, temperature range, and chemical compatibility to suit your application.