Photomultiplier Cathode-Ray Tube from Germany
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 — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
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