Fused Silica Capillary Tubes from Japan
Thin-walled, unworked capillary tubes of fused silica used primarily in gas chromatography and analytical instruments. These tubes maintain optical clarity and purity essential for precise measurements. HTS 7002.31.00.00 covers them as unworked tubes of fused quartz or other fused silica.
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
• Include dimensional specs and SiO2 purity certificates; capillaries under 1mm ID often scrutinized for microsphere confusion
• Declare as unworked even if coiled for shipping—uncoiling doesn't constitute working per chapter notes