Nephelometer Photomultiplier Housing from Japan
Light-tight aluminum housings for PMT detectors in nephelometric turbidity meters (9027.30 optical). Magnetic shielding reduces interference in low-level light detection. Critical optical component under 9027.90.64.00.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Certify magnetic shielding effectiveness (>60dB) and light leak rates
• Include PMT socket specifications and high-voltage insulator ratings
• Specify nephelometer model and scattering angle compatibility