9025 - Hydrometers and similar floating instruments, thermometers, pyrometers, barometers, hygrometers and psychrometers, recording or not, and any combination of these instruments; parts and accessories thereof:
Sub-classifications
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9025 19
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9025 80
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9025 9006 00
Overview
This HTS category, 9025, encompasses a diverse range of scientific and measuring instruments designed to determine physical properties such as temperature, atmospheric pressure, humidity, and density. It includes hydrometers and similar floating instruments used for liquid density measurements, as well as various types of thermometers, pyrometers, barometers, hygrometers, and psychrometers. These instruments may be standalone devices or integrated into a combined unit, and the classification also extends to their essential parts and accessories.
Unlike sibling categories within Section XVIII that might focus on optical devices (Chapter 90), musical instruments, or timekeeping devices, HTS 9025 is specifically dedicated to instruments measuring physical quantities. It is important to distinguish these from simple indicators or components that do not possess the core measuring functionality of the instruments described within this heading.
Within HTS 9025, further subdivisions exist to categorize specific instrument types. Subheadings typically differentiate between thermometers and pyrometers that are not combined with other instruments and a broader category for "other instruments." Additionally, a distinct subheading is reserved for parts and accessories, ensuring that components integral to the functioning of these measuring devices are appropriately classified.