Kieselguhr Catalyst Support Brick from Canada
Ceramic brick from kieselguhr used as inert support for chemical catalysts in reactors. Falls under HTS 6901.00.00.00 for ceramic goods of siliceous fossil meals.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide chemical inertness certificates for catalyst bed applications
• Declare industrial end-use to avoid consumer article shifts
• Test for >95% silica content from fossil sources