Ilford Ilfochrom Coupler for Color Negative Paper
Ilford's Ilfochrom coupler is a ready-to-use chemical preparation optimized for high-quality color negative paper processing in professional labs. It ensures accurate dye formation in the C-41 process for negative-to-positive prints. Falls under HTS 3707.90.32.20 due to its role as a dedicated coupler in color negative photographic paper workflows.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for use in color positive photographic paper
Positive paper couplers react differently in processing, separating them from negative paper variants.
If supplied as unmixed products not in measured portions
Unmixed bulk photo chemicals without retail-ready packaging shift to earlier Chapter 37 headings.
If primarily silver-based compounds without photo-specific function
Base silver salts not formulated for photographic image formation classify under inorganic chemicals.
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Import Tips & Compliance
• Provide manufacturer affidavits specifying 'color negative paper coupler' to support exact subheading classification
• Ensure packaging indicates measured portions for retail sale, as bulk shipments may require different documentation
Related Products under HTS 3707.90.32.20
Kodak Color Negative Paper Coupler Solution
This is a specialized chemical coupler formulation designed specifically for developing color negative photographic paper in darkroom processing. It facilitates the formation of color images by reacting with exposed silver halide emulsions during the color development stage. Classified under HTS 3707.90.32.20 as a coupler for color negative photographic paper, part of unmixed chemical preparations for photographic uses.
Fujifilm Superia Color Paper Coupler Concentrate
Fujifilm Superia coupler concentrate is a precise chemical mix for color negative photographic paper, enabling vibrant dye images in RA-4 processing. Diluted for use in automatic processors, it's essential for retail photo labs. HTS 3707.90.32.20 applies as a chemical preparation specifically for color negative paper couplers.
B&H Darkroom Color Coupler for Negative Paper
B&H's professional-grade color coupler is formulated for use in color negative photographic paper processors, ensuring sharp dye images. It's sold in convenient retail bottles for amateur and pro photographers. HTS 3707.90.32.20 covers this as a specific coupler chemical preparation for photographic paper.
Agfa Color Negative Paper Coupler Kit
Agfa's coupler kit contains measured portions of chemicals for color negative photographic paper development, packaged for retail darkroom use. It supports consistent color reproduction in professional printing. Classified in HTS 3707.90.32.20 for its dedicated coupler function in negative paper processes.