Section XVIII — Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; clocks and watches; musical instruments; parts and accessories thereof
Subheading
900220
Filters
Common commodities
Mounted UV optical filter for camerasPolarizing filter with ring mountingNeutral density filter in camera fittingsColored mounted filter for microscopesInterference filter in optical device ringsBlue-tinted mounted filter for photographyRed mounted filter for selective light transmissionGreen optical filter with frame mountingYellow mounted filter for specific wavelengthsInfrared filter with ring-type mounting