Butane Reference Fuel RM-1 from Mexico
Certified reference butane (iso-butane/n-butane blend) for automotive engine testing per ASTM D1837. Pure hydrocarbon standard under HTS 2901.10.10.00. Supplied in pressure cylinders with NIST traceability.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• ASTM specification docs; octane rating certificate; specify test fuel use to avoid Chapter 27