N-Nitrosodiphenylamine Analytical Standard from Germany
High-purity N-Nitrosodiphenylamine (99.5%+) certified reference material for EPA Method 8270 laboratory analysis. Classified under HTS 2921.44.0500 as the pure named chemical meeting Chapter 29 purity requirements. Used for calibration of GC-MS instruments detecting nitrosamines in environmental samples.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.97, articles the product of a member state of the European Union, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 10 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide NIST traceability certificate; labs require documented chain of custody
• Declare as 'analytical reference standard' to avoid 3822 reclassification