Cold Cathode Ion Gauge Tube from Japan
Cold cathode tubes measuring ultra-high vacuum by ionizing residual gas with high-voltage discharge between electrodes. HTS 8540.89.00 includes these as other cold cathode tubes for vacuum measurement applications.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Vacuum range (Torr/Pascal) and bakeout temperature ratings in documentation
• Contamination sensitivity requires sealed shipping containers
• Avoid misclassification as vacuum pumps under 8414