Diatomite Pool Filter Block from Mexico
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 — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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