9011.90.00.00 - Parts and accessories

This category, HTS Code 9011.90.00.00, encompasses all parts and accessories specifically designed for use with compound optical microscopes. This includes a wide range of items such as objective lenses, eyepieces, stage clips, light sources, condensers, focusing mechanisms, and any other components or supplementary equipment intended to be attached to or used in conjunction with microscopes falling under heading 9011. The critical factor for classification here is that these items are dedicated parts and accessories, not standalone optical instruments.

Distinguishing this category from its siblings is straightforward. Heading 9011 itself is divided into specific types of microscopes: stereoscopic microscopes (9011.10), microscopes for photomicrography, cinemicrography, or microprojection (9011.20), and other general microscopes (9011.80.00.00). This category, 9011.90.00.00, is distinct in that it is not for the complete microscope instrument but solely for the components and attachments that support or enhance the functionality of those instruments. For instance, an objective lens specifically made for a stereoscopic microscope would be classified here, not under 9011.10.

As a leaf node, HTS Code 9011.90.00.00 does not have further subcategories. Therefore, the classification of any item within this code relies on its direct relationship as a part or accessory to a microscope of heading 9011. Common examples include replacement bulbs for illumination, specialized stages for specimen manipulation, reticles for measurement within the field of view, and even carrying cases specifically designed to house and protect a particular model of compound optical microscope or its essential accessories. The focus remains on the accessory's role in facilitating or improving the use of the microscope itself.