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2903.43.10.00/Fluoromethane (HFC-41) Calibration Gas/Canada

Fluoromethane (HFC-41) Calibration Gas from Canada

Trace amounts of HFC-41 in nitrogen mixtures serve as calibration standards for environmental gas analyzers monitoring fluorocarbon emissions. The pure HFC-41 component drives classification under HTS 2903.43.10.00. Used in labs for regulatory compliance testing.

Duty Rate — Canada → United States

13.7%

Rate breakdown

9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
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Import Tips

• NIST-traceable certificates; dilute gas transport regs (UN1956)

• Issue: Over-dilution may classify as prepared lab reagent