-Alumina crucibles (or corundum crucible, aluminum oxide >99%) feature highly resistant to chemical erosion.-Recommended for chemists, metallurgists and others involved in high temperature work demanding contamination free results.-For use in reducing and oxidizing atmospheres and refractory metals (such as molybdenum, platinum, rhodium, tungsten, tantalum, and iridium). -Heating or colding too fast or uneven heating may crack the crucibles. Slow down the heating / colding rate is good for extending its lifespan.-Alumina crucibles CAN NOT heated by open fire. Specification:Material: Corundum (Al2O3)Max. Working Temperature: 1600CMax. Capacity: 16mlSize (L*W*H): 102 x 23 x 17mm (4.02" x 0.91" x 0.67")Thickness: 2.5mm (0.10").
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