HFC-143a Calibration Standard from Germany
NIST-traceable 1,1,1-trifluoroethane (HFC-143a) gas standard at 100 ppm in air for gas chromatography calibration. The principal HFC-143a component determines classification under HTS 2903.44.1020 as the named pure compound.
Duty Rate — Germany → United States
13.7%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Include NIST SRM traceability certificate and gravimetric preparation method
• Cylinder passivated with electropolished 316L SS; certify <1 RA surface finish
• Expiration dating based on shelf life testing per ISO 6141 standard