Specification Brand : CoorsTek BulletPoint1 : >99.6% Alumina BulletPoint2 : Rated up to 1750°C BulletPoint3 : Inert to hydrogen, carbon and refractory metals BulletPoint4 : Country of Origin: GERMANY Capacity : 0.1 milliliters ItemName : CoorsTek 60028 Porcelain Ceramic Combustion Boat, 0.1ml Capacity, 17mm Length, 6mm Width, 4mm Height (Case of 24) ItemPackageDimensions_Height : 19.304 centimeters ItemPackageDimensions_Length : 18.542 centimeters ItemPackageDimensions_Width : 18.288 centimeters ItemPackageQuantity : 1 ItemShape : Rectangular ItemTypeKeyword : science-lab-evaporation-dishes Manufacturer : CoorsTek Material : Porcelain Ceramic ModelNumber : 60028 NumberOfItems : 24 PartNumber : 60028 ProductDescription : >99.6% Alumina (Al2O3) Circular Dish, 60 ml capacity. Inert to hydrogen, carbon and refractory metals; can be used at operating temperatures to 1750°C in both oxidizing and reducing atmospheres.
Heating and Cooling Instructions Alumina is sensitive to thermal shock. Try to warm up the furnace chamber slowly. Heating rate of 150-300°C per hour is recommended for the first 1-1.5 hours to reduce the impact of thermal shock. Lower the temperature as gradually as possible. Cooling down rate is often half of the heating rate (75-150°C per hour). If possible, arrange for consecutive heating of furnace to maintain a hot crucible. If taking the crucibles out of furnace into room temperature to pour the melted material, try to make the process as gradual as possible.