Diatomite Pool Filter Block from Japan
Ceramic block composed of diatomaceous earth for use in swimming pool filtration systems, providing high porosity after firing. Falls under HTS 6901.00.00.00 as 'other ceramic goods' of siliceous fossil meals.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide porosity and absorption test results per ASTM C373 to confirm ceramic body characteristics
• Label clearly as 'diatomaceous earth ceramic' to differentiate from plastic filter media
• Watch for end-use declarations; industrial filters stay in 6901 but consumer pool toys go to Chapter 95