极速赛车网上投注
The CoorsTek® AD-99.5% alumina pestle is glazed completely except for the grinding surface. The alumina octagon-style mortar is glazed completely except for the inside grinding surface. AD-99.5% alumina mortar and pestle sets are recommended for precise elemental analysis because they provide minimal sample contamination. AD-99.5% Alumina is an extremely hard (9 on Mohs scale), non-absorbent, wear-resistant material. CoorsTek® porcelain & ceramic labware has excellent thermal-shock resistance