Lab-Grade Porcelain Watch Glass from Japan
Concave fired porcelain watch glass for covering lab vessels during evaporation. Technical laboratory ceramic under HTS 6909.90.00.00, with porcelain's characteristic translucency and low absorption.
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 diameter/tolerance specs matching lab beakers for technical proof
• Certify chemical inertness; generic disks risk tile classification
• Package as lab consumables, not decorative coasters