High-Purity Graphite Cupel for Fire Assay from Japan
Specialized graphite cupels used in fire assay for precious metal analysis. They contain over 50% free carbon and are fired after shaping for analytical laboratory use. These cupels absorb the lead button during precious metal parting, ensuring accurate results.
Duty Rate — Japan → Canada
0%
Import Tips
• Provide purity and carbon content certificates to confirm classification under this tariff item
• Specify the cupels' use in fire assay to avoid confusion with other ceramic goods
• Ensure they are not classified as laboratory glassware or other Chapter 90 items