HFC-227ea Calibration Gas Standard from Germany
Certified reference HFC-227ea gas mixtures at ppb/ppm levels in nitrogen balance for atmospheric monitoring and gas chromatography calibration. Pure component classified under HTS 2903.46.10.00 with trace analysis certificate. NIST-traceable concentration verification.
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
• Certificate of analysis with uncertainty budget (<2% relative) required
• Cylinder pressure test certification (DOT-3AA) mandatory for calibration gases
• Shelf life expiration dates must be current for reference standards