Scintillation Photomultiplier Tube from Mexico
High-quantum-efficiency photomultiplier tube paired with NaI(Tl) scintillation crystals for gamma ray spectroscopy in nuclear medicine. Features 10 dynode stages and bialkali photocathode sensitive to 300-650nm emission spectrum. Classified as light-sensing tube under 8540.89.00.60 for its vacuum tube electron multiplication technology.
Duty Rate — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Include crystal pairing specifications if imported as matched set to avoid separate crystal classification
• FDA 510(k) clearance documentation required for medical device component import clearance
• Declare peak quantum efficiency (>25%) and dark current specs for proper technical classification