HFC-143a Calibration Standard from Mexico
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 tariff item 2903.44.00.
Duty Rate — Mexico → Canada
0%
Import Tips
• Provide documentation of the calibration standard's traceability
• Ensure the gas mixture is properly labeled
• Check if the product qualifies for duty-free treatment under trade agreements