Alumina Crucible with Lid for Ash and Volatile Matter Testing Industrial Analyzers

This Alumina Crucible with Lid for Ash and Volatile Matter Testing is used in laboratory and industrial analysis. Produced by slip-casting or press-casting, it features high density and smooth, uniform surfaces both inside and out, ensuring durability and reliable performance under repeated high-temperature use.

Capable of long-term operation up to 1600°C, this crucible provides excellent thermal stability, chemical resistance, and mechanical strength, making it ideal for combustion analysis, material testing, and high-temperature processing.

Package: 1 piece per pack

Specifications

• Material: 99% Alumina (Al₂O₃)

• Outer Diameter: 150 mm

• Width: 130 mm

• Height: 60 mm

• Wall Thickness: 6 mm

• Maximum Firing Temperature: 1800°C

• Recommended Operating Temperature: 1600°C

• Available Types:

  • Ash Crucible

  • Volatile Crucible

• Lid Options:

  • With Lid

  • Without Lid

Applications

• Determination of ash content and volatile matter in materials

• Thermal and industrial analyses

• High-temperature testing in laboratories and production environments

Precautions for Using 99% Alumina Crucibles

1. Pre-drying: Before first use, place the crucible in an oven at approximately 105°C for 2 hours to remove moisture.

2. Avoid Direct Flame: Do not heat with gasoline, acetylene, or alcohol torches to prevent cracking caused by uneven heating.

3. Maintain Distance from Heating Elements: Keep at least 2 cm between the crucible and heating elements (e.g., carbon tubes, SiC rods, heating wires).

4. Control Heating/Cooling Rate:

   • Below 1200°C: ≤ 5°C per minute

   • Above 1200°C: ≤ 4°C per minute

   • Use controlled power cooling; avoid sudden shutdown at high temperatures to prevent thermal stress.

5. For Large Crucibles: Avoid direct contact with the furnace floor. Place the crucible on high-temperature-resistant supports (e.g., corundum plates) to enhance airflow and extend service life.