3503.00.55.20 - Photographic gelatin

This classification, HTS 3503.00.55.20, specifically covers photographic gelatin. This is a highly purified form of gelatin, manufactured to exacting standards to meet the stringent requirements of photographic processes. Its primary function is as a binding agent for light-sensitive silver halide crystals in photographic films and papers. The purity and specific physical properties of photographic gelatin are critical to image quality, preventing defects and ensuring consistent development.

It is important to distinguish photographic gelatin from its sibling categories. HTS 3503.00.55.10 covers edible gelatin, which is produced for consumption and meets food safety regulations. HTS 3503.00.55.50, "Other," is a residual category for gelatin and glues of animal origin not elsewhere specified within heading 3503. Therefore, classification under 3503.00.55.20 hinges on the intended application and specific manufacturing characteristics that make the gelatin suitable for photographic use.

As this is a leaf node within the HTS, there are no further subcategories. The classification is definitive for gelatin exclusively intended for photographic applications. When classifying, emphasis should be placed on evidence of photographic grade specifications, such as purity tests, bloom strength, and viscosity standards relevant to the photographic industry.