Channeltron Electron Multiplier Tube from China
The Channeltron Electron Multiplier Tube is a continuous channel electron multiplier tube for mass spectrometry, providing gain greater than 10^8 with 100ps FWHM timing resolution. It features curved channel geometry for high count rates up to 10^7 cps, classifying it as an 'other' thermionic, cold cathode, or photo-cathode valve under tariff item 8540.89.00. Its high performance makes it essential for analytical instruments.
Duty Rate — China → Canada
Import Tips
• Classify the channeltron electron multiplier tube under 8540.89.00 as a cold cathode valve, and provide its gain and timing specifications on the invoice
• If importing for use in scientific instruments, verify whether the tubes qualify for duty relief under a research or industrial exemption
• Ensure the tubes are handled as sensitive electronic components to avoid damage during CBSA inspection