Zirconia Grinding Media Balls from Japan
Sintered zirconia ceramic balls used in ball mills for fine grinding in chemical and pharmaceutical labs. These yttria-stabilized zirconia balls achieve a Mohs hardness of 9+, qualifying as technical ceramic ware under tariff item 6909.12.90. They are fired per Chapter 69 standards for durability.
Duty Rate — Japan → Canada
4.5%
Import Tips
• Verify the zirconia composition and hardness with supplier certificates
• Declare the balls as grinding media for laboratory use
• Ensure they are not classified as machinery parts under Chapter 84