Fabry-Perot Interferometer from China
Precision optical cavity with parallel mirrors for measuring laser wavelengths and fine spectra. HTS 9013.80.91.00 covers this as other unspecified optical instruments for spectroscopy. Not a scanning confocal microscope.
Duty Rate — China → United States
24.5%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
9903.88.157.5%Except as provided in headings 9903.88.39, 9903.88.42, 9903.88.44, 9903.88.47, 9903.88.49, 9903.88.51, 9903.88.53, 9903.88.55, 9903.88.57, 9903.88.65, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(r) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(s)
Import Tips
• Specify free spectral range (FSR) and finesse values in technical literature
• Ensure vibration isolation specs if claiming research instrument status
• Classify mounts separately if generic, under parts rules