HS Code for Hydrometer

The classification of a hydrometer under HS code 9025.80 is determined by its primary function as an instrument for measuring the density or specific gravity of liquids. According to the General Rules of Interpretation (GRI) 1, classification is governed by the terms of the headings and any relative section or chapter notes. Heading 9025 specifically encompasses hydrometers and similar floating instruments, whether or not they are recording. While thermometers and barometers have their own subheadings (9025.11, 9025.19, and 9025.80 for barometers), the hydrometer falls into the residual category of 9025.80 when it is not combined with other specific instruments that would change its classification. These instruments operate on the principle of buoyancy, where the depth to which the instrument sinks indicates the density of the fluid. The classification remains consistent regardless of whether the device is made of glass, metal, or plastic, provided it functions as a floating instrument for density measurement. This code is also used for instruments that measure the concentration of specific substances in a liquid based on density, such as sugar or alcohol. The technical nature of these devices as measuring instruments for physical properties places them firmly within Chapter 90, which covers optical, photographic, and measuring apparatus.

Products Included

• Alcoholometers for measuring spirits
• Saccharometers for sugar solutions
• Salinometers for salt concentration
• Battery hydrometers for testing electrolyte density
• Lactometers for milk density testing
• Acidometers for measuring acid strength

Common Misclassification

Hydrometers are frequently confused with thermometers classified under 9025.11 or 9025.19. While many hydrometers contain an internal thermometer (thermo-hydrometers), they remain under 9025.80 because the density measurement is the principal function. Another common error is attempting to classify electronic density meters under this code; however, electronic versions that do not use the floating principle may be classified under 9027.80 as instruments for physical or chemical analysis.

FAQ

What is the HS code for Hydrometer?

The HS code for a standard floating hydrometer is 9025.80.

Does this code include electronic density meters?

No, 9025.80 specifically covers floating instruments. Electronic or digital density meters are typically classified under heading 9027.