Duochrome Test Slide Projector Optics from Germany
Red-green bichromatic optics balancing spherical refractive errors. HTS 9018.90.20.00 includes optical test projectors for sight-testing. Endpoint determination in subjective refraction.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.97, articles the product of a member state of the European Union, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 10 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Specify dominant wavelength values (red 625nm, green 535nm typical)
• Include projection lens focal length and screen illumination specs
• Classify as complete optical system vs. individual color filters