HS Code for Liquid filter

Liquid filters are classified under HS code 8421.29. This classification is governed by the rules of Chapter 84, which covers nuclear reactors, boilers, machinery, and mechanical appliances. Heading 8421 is a broad category for centrifuges (including centrifugal dryers) and filtering or purifying machinery and apparatus for liquids or gases. The heading is subdivided based on the medium being filtered (liquid vs. gas) and the specific application of the filter. Subheadings 8421.21 through 8421.23 cover specific liquid filters: 8421.21 for water filtering/purifying, 8421.22 for filtering beverages other than water, and 8421.23 for oil or petrol filters for internal combustion engines. Subheading 8421.29 is the residual category for "other" liquid filtering machinery that does not meet the criteria of the more specific subheadings. This includes industrial filters for chemicals, coolants, paints, and hydraulic fluids. The classification is based on the primary function of the apparatus, which is the separation of solid, suspended, or colloidal matter from a liquid.

Products Included

• Chemical liquid filtration units
• Industrial coolant filters
• Hydraulic fluid filters
• Paint and lacquer filters
• Electroplating solution filters
• Liquid medicine filtration apparatus
• Wastewater filters (non-potable)

Common Misclassification

The most common misclassification occurs when a liquid filter is placed under 8421.21 (water filters) or 8421.23 (oil/petrol filters). If a filter is designed for general industrial liquids or chemicals, it must be placed in 8421.29. Another error involves 8421.39, which is for gas filters (like air filters); these are distinct from liquid filters. Furthermore, replaceable filter elements (cartridges) made of paper, textile, or ceramics are sometimes misclassified by their material component (e.g., Chapter 48 or 59), but they should generally be classified as parts of the machinery under 8421.99 or under the same heading as the machinery depending on the specific Section XVI notes.

FAQ

What is the HS code for Liquid filter?

The HS code for general liquid filters not used for water, beverages, or internal combustion engines is 8421.29.

How do I distinguish between 8421.21 and 8421.29?

HS code 8421.21 is strictly for machinery used to filter or purify water (such as for drinking or swimming pools). If the machine filters any other liquid, such as industrial chemicals or hydraulic oil, it falls under 8421.29.