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8540.20.40.00/Photomultiplier Tube PMT/Mexico

Photomultiplier Tube PMT from Mexico

Photomultiplier tubes (PMTs) use photocathodes to detect low-level light via electron multiplication for scintillation counters and spectroscopy. Falls under HTS 8540.20.4000 as 'other photocathode tubes.' Essential for particle physics and medical imaging detectors.

Duty Rate — Mexico → United States

13.3%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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Import Tips

• Specify quantum efficiency and gain factors in entry docs; often requires end-user certificates for radiation detection uses

• Avoid bulk import misclassification as semiconductor devices

Photomultiplier Tube PMT from Mexico — Import Duty Rate | HTS 8540.20.40.00