Alumina Crucible for Laboratory Use from Mexico
High-purity alumina crucible designed for melting and holding metals or chemicals in laboratory furnaces, containing over 90% Al2O3 by weight. Fired after shaping at high temperatures exceeding 800°C, it qualifies as a refractory ceramic good under HTS 6903.20.00.00 due to its alumina content and use in high-temperature processes.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Verify alumina content via chemical analysis certificate to confirm >50% Al2O3 for proper classification
• Provide firing temperature documentation (>800°C) to distinguish from non-refractory ceramics excluded from Chapter 69
• Avoid misclassification as lab glassware; specify refractory end-use in commercial invoice