Photomultiplier Cathode-Ray Tube from Canada
Photomultiplier CRTs are photocathode tubes functioning as television camera tubes in low-light scientific and military imaging systems. They amplify photon signals via electron multiplication. HTS 8540.20.20 includes these as image intensifiers and other photocathode tubes for cameras.
Duty Rate — Canada → United States
16%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Obtain end-user statements specifying imaging vs scintillation counter use
• Test for radiation tolerance if high-energy physics applications suspected
• Include gain specifications (10^4-10^7) to confirm photocathode multiplication function