Alum Precipitating Aid from Canada
Polymeric coagulant aid used with papermaker's alum to enhance charge neutralization and precipitation. HTS 3809.92.5050 classification for paper finishing preparation improving retention and drainage. Critical for high-filler content printing papers.
Duty Rate — Canada → United States
16%
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
• Pair with alum usage data in technical file; specify zeta potential reduction capability; avoid water treatment classification under 3825