High-Purity Graphite Cupel for Fire Assay
Specialized graphite cupels used in fire assay for precious metal analysis. Contains over 50% free carbon, fired after shaping for analytical laboratory use. Absorbs lead button during precious metal parting.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If sold as decorative tableware
Cupel shape resembles small bowls, risking earthenware classification if marketed as dinnerware.
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Import Tips & Compliance
• Mining/assaying end-use documentation prevents tableware misclassification
• Purity certificates (>99% carbon) support high-carbon heading
• Bulk shipments may qualify for different statistical reporting suffixes
Related Products under HTS 6903.10.00.00
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