Mercury Arc Light Sensor Tube from Germany
Historical mercury arc photocell tube using mercury vapor photocathode for industrial light level monitoring in legacy automation systems. Provides switching function based on light threshold detection. Remains classified under HTS 8540.89.00.60 as vapor-filled light-sensing tube despite obsolescence.
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
• RoHS exemption documentation required due to mercury content
• Specify vapor pressure and arc characteristics to confirm vapor tube classification
• Safety data sheets mandatory for hazardous material declarations