Specification Brand : CoorsTek BulletPoint1 : Capsule crucible features straight sides and flat bottom BulletPoint2 : White glazed inside and out, except for rim BulletPoint3 : Thermally shock-resistant; To prolong the life of your CoorsTek lab ware be sure to follow gradual heating and cooling rates. BulletPoint4 : Maximum temperature limit for use: 1150°C Capacity : 25 milliliters ItemName : CoorsTek 60050 Porcelain Ceramic Capsule with Flat Bottom, 25mL Capacity, 69mm OD, 12mm Height (Case of 24) ItemPackageDimensions_Height : 16.002 centimeters ItemPackageDimensions_Length : 42.164 centimeters ItemPackageDimensions_Width : 31.75 centimeters ItemPackageQuantity : 1 ItemShape : Cylindrical ItemTypeKeyword : crucibles Manufacturer : CoorsTek Material : Porcelain Ceramic ModelNumber : 60050 NumberOfItems : 24 PartNumber : 60050 ProductDescription : >95% Zirconia (ZrO2) Conical Crucible, 10 ml capacity. Provides excellent chemical inertness and corrosion resistance at temperatures to 2100°C. Offers unique ability to allow oxygen ions to move freely through the crystal structure above 600°C.
Heating and Cooling Instructions Slow ramp rate and cooling rate are highly recommended to minimize the thermal shock; when increasing the temperature, special attention should be paid to two sensitive temperature periods: 100-300°C and 1,050-1,200°C during which the heating rate should not exceed 3°C per minute. The rate can be faster in other temperature ranges, but it is recommended to be less than 5°C per minute. Taking the crucible directly out of furnace at high temperatures may cause cracks. If possible, take it out when the temperature is under 100°C.