CRT Purity Glass Sample Disc
Small glass disc with phosphor coating used during CRT manufacturing to check glass purity and contamination levels. HTS 8540.99.8000 for specialized test parts of cathode-ray tubes. Quality control essential for production lines.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If unworked glass discs
Plain glass discs without phosphor classified under Chapter 70 glassware.
If physical test instruments
Test discs with integrated measurement scales may be lab equipment.
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Import Tips & Compliance
• Include phosphor coating type (P1/P20/etc.) and purity test standards
• Batch traceability documentation crucial for quality control imports
• Fragile - requires special dunnage and handling instructions
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Specialized 10MΩ bleeder resistor mounted internally in CRTs to safely discharge high-voltage anode after power-off. Classified HTS 8540.99.8000 as integral CRT safety parts. Prevents electrical shock during service.
CRT Internal Magnetic Shielding
Mu-metal internal shielding sheet placed between CRT electron gun and deflection area to prevent external magnetic interference. HTS 8540.99.8000 for other specialized CRT components maintaining image purity. Essential for computer monitors.