Selenium-75 Gamma Source from Canada
Selenium-75 well logging sources for oilfield gamma ray measurements. HTS 2844.43.00.21 covers this specific gamma-emitting isotope used in sealed form. Chemically defined per Chapter 28 subheading note.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Oilfield sources need API Spec 5DP certification for downhole encapsulation
• Coordinate with DOT PHMSA for highway transport exemption under 49 CFR 173.427
• Declare as 'not for medical use' to avoid FDA radiation safety oversight