Specification Brand : Blodgett BulletPoint1 : >99.6% Alumina BulletPoint2 : Rated up to 1750°C BulletPoint3 : Inert to hydrogen, carbon and refractory metals BulletPoint4 : High-Quality Replacement: Manufactured by MAVRIK, this replacement part meets or exceeds the original specifications of the FRANKLIN CHEF 142160 BulletPoint5 : Steel ExternallyAssignedProductIdentifier1 : 046851401788 ExternallyAssignedProductIdentifier2 : 0046851401788 IncludedComponents : Replacement Part ItemDisplayDimensions_Height : 1.5 inches ItemDisplayDimensions_Length : 20 inches ItemDisplayDimensions_Width : 0.7 inches ItemDisplayWeight : 0.42 pounds ItemName : Alumina Rectangular Tray, 27ml, Each ItemPackageDimensions_Height : 31 inches ItemPackageDimensions_Length : 19.2 inches ItemPackageDimensions_Width : 19 inches ItemPackageQuantity : 1 ItemTypeKeyword : science-lab-oven-accessories Manufacturer : Graphtek ModelNumber : AD-A996 NumberOfBoxes : 1 NumberOfItems : 1 PartNumber : AL-3027 ProductDescription : >99.6% Alumina (Al2O3) Rectangular Tray, 27 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.