pengiriman item ini menggunakan bubblewrap tebal tanpa dikemakan biaya tambahan... Alumina (Al2O3) has a wide application due to its versatility and low material cost. Alumina possesses a high melting point, strong hardness, and good chemical stability, making it a good material to withstand high temperature and chemical corrosion. Features: One high purity Alumina combustion boats for chemical calcining, metal casting, and ceramic sample preparation Dimension: Length: 100mm; Edge Width: 20 mm; Center Width: 22mm +/- 2mm ; Height: 20 mm Shape: Rectangular shape with a slightly bulged center Note: This Alumina Crucible does not fit in 1 #34; OD tubes. Purity: Al2O3 gt; 99.5%; Fe2O3 lt; 0.01% 100% impervious Density: gt; 3.8 g/cm3 Max. working temperature: 1750 oC or 3180 °F