Y&X Beijing Technology Co., Ltd.
| PbO Absorption | More Than 70% of Own Weight |
| Customization | Size / Specification / Packaging |
| Product Name | Fire Assay Cupel |
| Material | Magnesium Oxide (MgO) |
| Applicable Metals | Gold / Silver / Precious Metals |
| Product Form | Round Cupel |
| Payment Terms | T/T,L/C |
| Supply Ability | |
| Application | Fire Assay Cupellation |
| Delivery Time | To be confirmed with order |
| Packaging Details | Export-grade carton with model label; custom packaging available |
| Function | Lead Oxide (PbO) Absorption |
| Available Sizes | Multiple Sizes |
| MgO Content | 96% |
| Place of Origin | China |
| Brand Name | Y&X |
| Certification | Available upon request |
| Model Number | Fire Assay Cupel |
View Detail Information
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Product Specification
| PbO Absorption | More Than 70% of Own Weight | Customization | Size / Specification / Packaging |
| Product Name | Fire Assay Cupel | Material | Magnesium Oxide (MgO) |
| Applicable Metals | Gold / Silver / Precious Metals | Product Form | Round Cupel |
| Payment Terms | T/T,L/C | Supply Ability | |
| Application | Fire Assay Cupellation | Delivery Time | To be confirmed with order |
| Packaging Details | Export-grade carton with model label; custom packaging available | Function | Lead Oxide (PbO) Absorption |
| Available Sizes | Multiple Sizes | MgO Content | 96% |
| Place of Origin | China | Brand Name | Y&X |
| Certification | Available upon request | Model Number | Fire Assay Cupel |
| High Light | Multiple Sizes Fire Assay Cupel ，96% MgO High PbO Absorption ，Gold Silver Cupellation Consumable | ||
Y&X fire assay cupels are engineered for the cupellation stage of gold, silver, and precious metal analysis. Manufactured from 96% magnesium oxide with a specialized fluxing agent formulation, these cupels feature smooth surfaces, uniform shapes, and exceptional mechanical strength.
During cupellation, the porous cupel efficiently absorbs molten lead oxide (PbO), while gold and silver remain as a precious metal bead for subsequent analysis. Multiple cupel sizes are available to meet diverse fire assay laboratory requirements.
| Model | Height H (mm) | Top OD D (mm) | Bottom Dia. D2 (mm) | Cavity Dia. D1 (mm) | Cavity Depth H1 (mm) | Pcs/Carton |
|---|---|---|---|---|---|---|
| 2X | 17 | 24 | 19 | 18 | 8 | 1008 |
| 3 | 20 | 26 | 20 | 23 | 5.5 | 500 |
| 4A | 22 | 27 | 20 | 24 | 6 | 500 |
| 4 | 22 | 29 | 23 | 24 | 6 | 486 |
| 5 | 26 | 35 | 26 | 27 | 8 | 324 |
| 6A-26 | 26 | 40 | 30 | 31.2 | 11.8 | 300 |
| 6A-29 | 29 | 40 | 30 | 31.2 | 11.8 | 240 |
| 7A | 32 | 40 | 30 | 31.2 | 11.8 | 200 / 300 |
| 7AS (7X) | 35 | 40 | 30 | 31.2 | 11.8 | 200 / 300 |
| 7AS-15 | 32 | 40 | 30 | 32 | 15 | 300 |
| 8 | 27.1 | 44.3 | 34.6 | 34.2 | 8.5 | 240 |
| 8A | 35 | 45 | 37 | 38 | 13 | 200 |
| 8AM | 35 | 45 | 37 | 33 | 12 | 200 |
| 8S | 40 | 44 | 34 | 38 | 14 | 200 |
| 9 | 30 | 51 | 43 | 40 | 11 | 120 |
| 9A | 34 | 51 | 39 | 40 | 15 | 120 |
| 10 | 30.2 | 60 | 49.7 | 52.6 | 11.5 | 75 |
| 11 | 44 | 56.8 | 48.8 | 47.8 | 14.8 | 80 |
| 14 | 70 | 110 | 88 | 80 | 24 | 12 |
| Straight 40 | 32 | 40 | 40 | -- | -- | 200 |
Different packing configurations are available for some models.
Cupel selection should be based on required outside diameter, cavity diameter, cavity depth, lead button size, and cupellation furnace configuration.
If replacing existing cupels, provide the model or dimensions for precise specification matching.
Suitable for: Gold Mine Assay Laboratories • Fire Assay Laboratories • Geological Exploration • Commercial Testing Laboratories • Precious Metal Refineries • Gold and Silver Analysis
During cupellation, insufficient PbO absorption can affect the final precious metal bead, while cracking or pitting may result in sample loss. Consistent cupel dimensions and absorption performance are critical for reliable fire assay testing.
Y&X conducts periodic laboratory testing to monitor product quality and ensure batch consistency.
Yes. Multiple specifications from 2X to 14 and Straight 40 are available. Custom sizes and packaging can also be provided.
Provide your current cupel model, dimensions, lead button information, or furnace requirements, and we will assist with specification matching.
Y&X Beijing Technology Co., Ltd. supplies fire assay equipment and consumables for gold, silver, and precious metal analysis, including cupels, cupel blocks, fusion furnaces, and cupellation furnaces.
Custom specifications and packaging are available according to laboratory requirements.
Company Details
Business Type:
Manufacturer,Trading Company,Seller,Exporter
Year Established:
2014
Total Annual:
50000000-65000000
Employee Number:
20~100
Ecer Certification：
Verified Supplier
Y&X Beijing Technology Co., Ltd. is a mining-focused technology company dedicated to helping mineral processing laboratories and mining enterprises achieve more accurate test results, more stable process design, and higher beneficiation efficiency. Y&X provides complete mineral processing... Y&X Beijing Technology Co., Ltd. is a mining-focused technology company dedicated to helping mineral processing laboratories and mining enterprises achieve more accurate test results, more stable process design, and higher beneficiation efficiency. Y&X provides complete mineral processing...
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