Fire Assay Cupel
Material: Magnesia≥98.5%
Size: variety of shapes and sizes
Usage: fire assay, gold melting, precious metal assay
Product instruction
High refractoriness (1100 centigrade degree), 70% rapid absorption and recovery rate of 97-98.5%. Without milling.
Details of chemical content
|
Typical Chemical Analysis |
|
|
MgO |
≥98.5% |
|
Al2O3 |
≥1.2% |
|
Working Temperature |
1000℃ |
|
Specific Gravity: |
2.35 |
|
Porosity: |
12%-15% |
|
Lead Absorption |
70% |
Data of dimensions
Applications:
Precious metal analysis
Mineral assaying
Mining laboratory
Laboratory Testing
Fire Assaying
Gold Assaying
Production Information:
(1) Press: Pressed the cupels by punch machine with specific mould according to the sizes that customer required
(2) Air-dry: Pressed cupels, air dried for at least 15 days in the air drying workshop
(3) Inspection and packing: Inspect the surface of crucibles whether is smooth or have cracks. After inspection, packed. .
After finishing the order,the standard export carton will be packed carefully. We accept all kinds of delivery terms, including EXW, FOB, CFR, CIF
