Brazil NCM · 8-digit code

NCM 8421.21.00 – Machinery for filtering or purifying water

NCM 8421.21.00 (also written 84212100) is Brazil's code for machinery for filtering or purifying water. Its first 6 digits are HS code 8421.21.

Official description of NCM 8421.21.00

PortuguêsOfficial
Para filtrar ou depurar água
EnglishUnofficial translation

Machinery; for filtering or purifying water

Nomenclatura Comum do Mercosul (Siscomex). Updated Oct 2026 · In force since Apr 2022 (Res Gecex 272/2021).

How to read NCM 8421.21.00

84Chapter 21Heading 21Subheading

HS code 8421.21
Same in every country

0Item 0Subitem

Added by Mercosur
Brazil, Argentina, Paraguay, Uruguay

The first 6 digits are the international HS code, so their meaning is the same in every country; Brazil publishes the text in Portuguese. The last two digits are 00 because Brazil does not split this HS code further. The full 8-digit code is used on import declarations (DUIMP), invoices (NF-e) and tax filings.

Full classification path

  1. Chapter 84 Machinery and mechanical appliances, boilers, nuclear reactors; parts thereof Reatores nucleares, caldeiras, máquinas, aparelhos e instrumentos mecânicos, e suas partes.
  2. Heading 84.21 Centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus for liquids or gases Centrifugadores, incluindo os secadores centrífugos; aparelhos para filtrar ou depurar líquidos ou gases.
  3. Group 8421.2 Filtering or purifying machinery and apparatus for liquids: Aparelhos para filtrar ou depurar líquidos:
  4. Subheading 8421.21 Machinery; for filtering or purifying water
  5. Subitem 8421.21.00 Machinery; for filtering or purifying water Para filtrar ou depurar água

Questions about NCM 8421.21.00

What is NCM 8421.21.00?

NCM 8421.21.00 (84212100) is the Brazilian (Mercosur) code for machinery for filtering or purifying water. Its official Portuguese description is “Para filtrar ou depurar água”.

What is the HS code for NCM 8421.21.00?

HS 8421.21 (Machinery; for filtering or purifying water). The first 6 digits of an NCM code are its international HS code; the last 2 digits are Brazil's own split.

Is an NCM code the same as an HS code?

The first 6 digits are the same in every country. NCM adds an item digit (7th) and a subitem digit (8th). A code ending in 00 means Brazil does not split that HS code further.

Which countries use NCM 8421.21.00?

All Mercosur members use the same NCM codes: Argentina, Brazil, Paraguay and Uruguay.

Source: Siscomex Classif NCM table, updated Oct 2026 (Resolução Gecex nº 926/2026). The Portuguese text is the official one; the English is our translation.