Cylindrical Magnesia Crucible, 1PCS MgO Ceramic Crucible Cylindrical Boat, Tubular Porcelain Boat (30 * 35mm (14mL), Diameter*Height (Capacity))

Note: ★1. The heating or cooling rate should not be too fast, especially for large crucibles. The heating or cooling rate should not be too rapid. For temperatures below 1200℃, it should be less than 5℃ per minute; for temperatures above 1200℃, it should be less than 4℃ per minute. It is recommended to use an electrically controlled temperature control for cooling. If the power is directly turned off at high temperatures, the initial cooling rate may be too fast, which could potentially cause cracking. ★2. Before using the crucible for the first time, please place it in an oven set at around 105℃ for 120 minutes to remove any moisture. ★3. Do not use the blowtorch for direct heating. Avoid cracking of the crucible due to uneven heating. The distance between the crucible and the heating element (such as carbon tubes, silicon-molybdenum rods, heating wires, etc.) should be more than 2 cm. ★4. The bottom of the large crucible should be kept away from the bottom of the furnace as much as possible. It is recommended to use heat-resistant materials such as corundum sheets to elevate the crucible, creating an air circulation to extend the service life of the crucible. ★5. Magnesium oxide and silicon dioxide will react at high temperatures to form magnesium silicate. If the material contains silicon dioxide, please use it with caution. ◈The second picture has detailed parametric drawings, please check the parameters carefully before purchasing◈The speed of heating or cooling should not be too fast, and the speed of temperature change in use is best controlled at <4℃/ minute◈If there is anything unclear, please contact us to confirm the details before placing an order ◈1 PCS/Package

• Note: ★1. The heating or cooling rate should not be too fast, especially for large crucibles. The heating or cooling rate should not be too rapid. For temperatures below 1200℃, it should be less than 5℃ per minute; for temperatures above 1200℃, it should be less than 4℃ per minute. It is recommended to use an electrically controlled temperature control for cooling. If the power is directly turned off at high temperatures, the initial cooling rate may be too fast, which could potentially cause cracking. ★2. Before using the crucible for the first time, please place it in an oven set at around 105℃ for 120 minutes to remove any moisture.
• ★3. Do not use the blowtorch for direct heating. Avoid cracking of the crucible due to uneven heating. The distance between the crucible and the heating element (such as carbon tubes, silicon-molybdenum rods, heating wires, etc.) should be more than 2 cm.
• ★4. The bottom of the large crucible should be kept away from the bottom of the furnace as much as possible. It is recommended to use heat-resistant materials such as corundum sheets to elevate the crucible, creating an air circulation to extend the service life of the crucible. ★5. Magnesium oxide and silicon dioxide will react at high temperatures to form magnesium silicate. If the material contains silicon dioxide, please use it with caution.
• ◈The second picture has detailed parametric drawings, please check the parameters carefully before purchasing◈The speed of heating or cooling should not be too fast, and the speed of temperature change in use is best controlled at <4℃/ minute
• ◈If there is anything unclear, please contact us to confirm the details before placing an order ◈1 PCS/Package