Code 8421 29 · Heading 8421

Liquid filtration or purification machines, excluding water, beverage, oil and petrol filters and artificial kidneys

This covers machines and apparatus for filtering or purifying liquids, except those for water or other beverages, oil or petrol filters for internal combustion engines, and artificial kidneys. The more specific children distinguish machines made from fluorine-containing polymers with a filter or purification membrane thickness not exceeding 140 micrometres.

For example

Industrial liquid filtration machine for a liquid other than water or a beverage, and not an oil or petrol filter for an internal combustion engine
Liquid purification apparatus made from fluorine-containing polymers, with a filter or purification membrane thickness not exceeding 140 micrometres, for a liquid other than water or a beverage

Save Browse the codes below

See the official tariff text

Official tariff text

Machinery and apparatus for filtering or purifying liquids (excl. such machinery and apparatus for water and other beverages, oil or petrol-filters for internal combustion engines and artificial kidneys)

The path to this code

Every code is reached through these choices, one level at a time.

Step 4 of 4

Step 1 · Section XVI Machinery and mechanical appliances; electrical equ…
Is the product a machine, apparatus or mechanical tool, or is it electrical equipment, a sound recorder or player, or a television image and sound recorder or player?
✓
Step 2 · Chapter 84 Nuclear reactors, boilers, machinery and mechanical… 1 of 2 chapters in section XVI
What is the machine, appliance or part specifically designed to do?
✓
Step 3 · Heading 8421 Centrifuges, incl. centrifugal dryers (excl. those … 21 of 86 headings under chapter 84
Is the item a centrifuge, a machine or apparatus for filtering or purifying liquids or gases, or a part for one of these products—and, if it is a centrifuge or filter, is it for a specific use named below?
✓
Step 4 · Subheading 8421 29 Machinery and apparatus for filtering or purifying … 7 of 12 subheadings under heading 8421
Is the machine made from fluorine-containing polymers, with a filter or purification membrane thickness not exceeding 140 micrometres?

Full 8-digit codes

Pick the description that best matches your product.

2 codes below this one

Compare the sibling codes

Classification decides the rate here: from 0.0% to 2.7%.

8421 11 Centrifugal cream separators 2.2%
8421 12 Centrifugal clothes-dryers 2.7%
8421 19 Centrifuges, incl. centrifugal dryers (excl. isotope separators, cream separators and clothes dryers) 0.0–1.5%
8421 21 Machinery and apparatus for filtering or purifying water 1.7%
8421 22 Machinery and apparatus for filtering or purifying beverages (excl.water) 1.7%
8421 23 Oil or petrol-filters for internal combustion engines 1.7%
8421 29 Machinery and apparatus for filtering or purifying liquids (excl. such machinery and apparatus for water and other beverages, oil or petrol-filters for internal combustion engines and artificial kidneys) you are here 0.0–1.7%
8421 31 Intake air filters for internal combustion engines 1.7%
8421 32 Catalytic converters or particulate filters, whether or not combined, for purifying or filtering exhaust gases from internal combustion engines 1.7%
8421 39 Machinery and apparatus for filtering or purifying gases (excl. isotope separators and intake air filters for internal combustion engines, and catalytic converters and particulate filters for purifying or filtering exhaust gases from internal combustion engines) 0.0–1.7%
8421 91 Parts of centrifuges, incl. centrifugal dryers, n.e.s. 1.7%
8421 99 Parts of machinery and apparatus for filtering or purifying liquids or gases, n.e.s. 0.0–1.7%

Export to Norway

What Norwegian customs charges when goods like these are imported into Norway.

84.21.2900

Other

Ordinary duty

Duty free

Goods of EU origin

Duty free You need documentation of EU origin to use this rate.

Norwegian tariff data version 1.5/1.2, last checked Aug. 9, 2026.

Contains data from Norwegian Customs (data.toll.no), licensed under CC BY 4.0, adapted for display.

Export to the United Kingdom

What UK customs charges when goods like these are imported into the UK.

All 3 UK lines under this code

They all have the same duty rates shown here.

Ordinary duty

Duty free

Goods of EU origin

Duty free You need documentation of EU preferential origin to use this rate.

These rates apply in Great Britain. Different rules may apply for goods entering Northern Ireland.

UK tariff data version v4.0.1576, last checked Aug. 3, 2026.

Contains public sector information licensed under the Open Government Licence v3.0.

Source: UK Department for Business and Trade (data.api.trade.gov.uk).

Check the neighbouring codes

The codes just before and after this one, in case a nearby group fits better.

See all 12 codes at this level

Previous code 8421 23

Oil or petrol-filters for internal combustion engines

you are here 8421 29

Machinery and apparatus for filtering or purifying liquids (excl. suc…

Next code 8421 31

Intake air filters for internal combustion engines

Duty rates shown here are estimates, read from official EU / Danish, Norwegian and UK tariff data for orientation only. Confirm the current rate with SKAT, TARIC, Norwegian Customs or the UK Online Trade Tariff before you file. The rate you pay can also depend on the country of origin. These are base customs duties only: import VAT, excise duties, anti-dumping duties and safeguard or quota measures are not included.