8421 Centrifuges, incl. centrifugal dryers (excl. those for isotope separation), filtering or purifying machinery and apparatus, for liquids or gases, parts thereof (excl. artificial kidneys)

8421 (01/1988-..) Centrifuges, incl. centrifugal dryers (excl. those for isotope separation), filtering or purifying machinery and apparatus, for liquids or gases, parts thereof (excl. artificial kidneys) 84211100 (01/1988-..) Centrifugal cream separators 84211200 (01/1988-..) Centrifugal clothes-dryers 84211910 (01/1988-12/2005) Centrifuges for civil aircraft (excl. isotope separators) 84211920 (01/2006-..) Centrifuges of a kind used in laboratories 84211940 (01/2006-12/2006) Centrifuges of a kind used in the manufacture of semiconductor wafers 84211970 (01/2007-..) Centrifuges, incl. centrifugal dryers (excl. apparatus for isotope separation, cream separators, clothes-dryers, and centrifuges of a kind used in laboratories and in the manufacture of semiconductor wafers) 84211980 (01/2006-12/2006) Centrifuges, incl. centrifugal dryers (excl. apparatus for isotope separation, cream separators, clothes-dryers, and centrifuges of a kind used in laboratories and in the manufacture of semiconductor wafers) 84211991 (01/1988-12/2005) Centrifuges of a kind used in laboratories 84211993 (01/1995-12/1999) Spinners for coating photographic emulsions on semiconductor wafers 84211994 (01/2000-12/2005) Centrifuges of a kind used in the manufacture of semiconductor wafers 84211995 (01/1998-12/1999) Centrifuges of a kind used in the manufacture of semiconductor wafers (excl. spinners for coating photographic emulsions on semiconductor wafers) 84211996 (01/1998-12/1998) Spinners for coating photographic emulsions on LCD substrates 84211997 (01/1998-12/1998) Centrifuges, incl. centrifugal dryers (excl. for civil aircraft of subheading 8421.19.10, apparatus for isotope separation, cream separators, clothes-dryers, centrifuges of a kind used in laboratories and in the manufacture of semiconductor wafers and spinners for coating photographic emulsions on LCD substrates) 84211998 (01/1995-12/1997) Centrifuges, incl. centrifugal dryers (excl. for civil aircraft of subheading 8421.19.10, apparatus for isotope separation, cream separators, clothes-dryers, centrifuges of a kind used in laboratories, and spinners for coating photographic emulsions on semiconductor wafers) 84211999 (01/1999-12/2005) Centrifuges, incl. centrifugal dryers (excl. for civil aircraft of subheading 8421.19.10, apparatus for isotope separation, cream separators, clothes-dryers, and centrifuges of a kind used in laboratories and in the manufacture of semiconductor wafers) 84212100 (01/2006-..) Machinery and apparatus for filtering or purifying water 84212110 (01/1988-12/2005) Machinery and apparatus for filtering or purifying water, for civil aircraft 84212190 (01/1988-12/2005) Machinery and apparatus for filtering or purifying water (excl. that for civil aircraft of subheading 8421.21.10) 84212200 (01/1988-..) Machinery and apparatus for filtering or purifying beverages (excl.water) 84212300 (01/2006-..) Oil or petrol-filters for internal combustion engines 84212310 (01/1988-12/2005) Oil or petrol-filters for internal combustion engines, for civil aircraft 84212390 (01/1988-12/2005) Oil or petrol-filters for internal combustion engines (excl. such for civil aircraft of subheading 8421.23.10) 84212900 (01/2006-12/2016) 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) 84212910 (01/1988-12/2005) Machinery and apparatus for filtering or purifying liquids for civil aircraft (excl. such machinery and apparatus for water and other beverages and oil or petrol-filters for internal combustion engines) 84212920 (01/2017-..) Machinery and apparatus for filtering or purifying liquids, made of fluoropolymers and with filter or purifier membrane thickness <= 140 ++m (excl. those for water and other beverages, and artificial kidneys) 84212980 (01/2017-..) 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, artificial kidneys, and those made of fluoropolymers with filter or purifier membrane thickness <= 140 ++m) 84212990 (01/1988-12/2005) Machinery and apparatus for filtering or purifying liquids (excl. such machinery and apparatus for civil aircraft of subheading 8421.29.10 and for water and other beverages, oil or petrol-filters for internal combustion engines and artificial kidneys) 84213100 (01/2006-..) Intake air filters for internal combustion engines 84213110 (01/1988-12/2005) Intake air filters for internal combustion engines, for civil aircraft 84213190 (01/1988-12/2005) Intake air filters for internal combustion engines (excl. those for civil aircraft of subheading 8421.31.10) 84213200 (01/2022-..) Catalytic converters or particulate filters, whether or not combined, for purifying or filtering exhaust gases from internal combustion engines 84213910 (01/1988-12/2005) Machinery and apparatus for filtering or purifying gases, for civil aircraft (excl. isotope separators and intake air filters for internal combustion engines) 84213915 (01/2017-..) Machinery and apparatus for filtering or purifying gases, with stainless steel housing and with inlet and outlet tube bores with inside diameters <= 1,3 cm 84213920 (01/2006-12/2016) Machinery and apparatus for filtering or purifying air (excl. isotope separators and intake air filters for internal combustion engines) 84213925 (01/2017-..) Machinery and apparatus for filtering or purifying air (excl. intake air filters for internal combustion engines, and those with stainless steel housing and with inlet and outlet tube bores with inside diameters <= 1,3 cm) 84213930 (01/1988-12/2005) Machinery and apparatus for filtering or purifying air (excl. such articles for civil aircraft of subheading 8421.39.10, isotope separators and intake air filters for internal combustion engines) 84213935 (01/2022-..) Machinery and apparatus for filtering or purifying gases other than air by a catalytic process (excl. those with stainless steel housing and with inlet and outlet tube bores with inside diameters <= 1,3 cm) 84213940 (01/2006-12/2009) Machinery and apparatus for filtering or purifying gases (other than air), by a liquid process (excl. isotope separators) 84213951 (01/1988-12/2005) Machinery and apparatus for filtering or purifying gases (other than air), by a liquid process (excl. such articles for civil aircraft of subheading 8421.39.10 and isotope separators) 84213955 (01/1988-12/1995) Machinery and apparatus for filtering or purifying gases other than air, by an electrostatic process (excl. such articles for civil aircraft of subheading 8421.39.10 and isotope separators) 84213960 (01/2006-12/2016) Machinery and apparatus for filtering or purifying gases (other than air), by a catalytic process (excl. isotope separators) 84213971 (01/1988-12/2005) Machinery and apparatus for filtering or purifying gases (other than air), by a catalytic process (excl. such articles for civil aircraft of subheading 8421.39.10 and isotope separators) 84213975 (01/1988-12/1995) Machinery and apparatus for filtering and purifying gases other than air, by a thermic process (excl. such articles for civil aircraft of subheading 8421.39.10 and isotope separators) 84213980 (01/2010-12/2016) Machinery and apparatus for filtering and purifying gases (other than air and excl. those which operate using a catalytic process, and isotope separators) 84213985 (01/2022-..) Machinery and apparatus for filtering or purifying gases other than air (excl. isotope separators, those using a catalytic process, and those with stainless steel housing and with inlet and outlet tube bores with inside diameters <= 1,3 cm) 84213990 (01/2006-12/2009) Machinery and apparatus for filtering and purifying gases (other than air and excl. those which operate using a liquid or catalytic process, and isotope separators) 84213998 (01/1996-12/2005) Machinery and apparatus for filtering and purifying gases (other than air and excl. those which operate using a liquid or catalytic process, machinery and apparatus for civil aircraft of subheading 8421.39.10, and isotope separators) 84213999 (01/1988-12/1995) Machinery and apparatus for filtering and purifying gases other than air (excl. those which operate using a liquid, electrostatic, catalytic or thermic process, machinery and apparatus for civil aircraft of subheading 8421.39.10 and isotope separators) 84219100 (01/2007-..) Parts of centrifuges, incl. centrifugal dryers, n.e.s. 84219110 (01/1998-12/2006) Parts of centrifuges of a kind used in the manufacture of semiconductor wafers, n.e.s. 84219130 (01/1998-12/2006) Parts of spinners for coating photographic emulsions on LCD substrates, n.e.s. 84219190 (01/1998-12/2006) Parts of centrifuges, incl. centrifugal dryers, n.e.s. (excl. of centrifuges of a kind used in the manufacture of semiconductor wafers and of spinners for coating photographic emulsions on LCD substrates) 84219900 (01/1988-12/2016) Parts of machinery and apparatus for filtering or purifying liquids or gases, n.e.s. 84219910 (01/2017-..) Parts of machinery and apparatus of subheadings 84212920 or 84213915, n.e.s. 84219990 (01/2022-..) Parts of machinery and apparatus for filtering or purifying liquids or gases, n.e.s.