Cupel for Fire Assay from United States
A magnesia ceramic cupel used for absorbing lead in precious metal fire assay analysis. This refractory good is specifically named in tariff item 6903.90.00 and is fired to withstand high temperatures.
Duty Rate — United States → Canada
0%
Import Tips
• Ensure the cupel is fired after shaping and not just dried
• Declare the magnesia composition accurately
• Be aware that cupels with bone ash may have different classifications; confirm with CBSA if unsure