Heat-Treated Pumice Granules for Water Filtration from Japan
Heat-treated pumice granules are pumice stone subjected to thermal processing to enhance porosity for water filtration systems and aquariums. Tariff item 2513.10.00 covers pumice stone whether or not heat-treated, as explicitly stated in the heading, provided no other processing like mixing occurs.
Duty Rate — Japan → Canada
0%
Import Tips
• Confirm the heat treatment does not alter the product's structure beyond what is permitted—calcination is excluded by Chapter 25 Note 1
• Declare the granules as pumice stone, not as filtration media, to avoid misclassification
• Have technical specifications ready to show the heat treatment is for porosity, not chemical change