| 4805.40 | | Filter paper and paperboard |
| 4812.00 | 000 | Filter blocks, slabs and plates, of paper pulp. |
| 4823.20 | 000 | Filter paper and paperboard |
| 84.14 | | Air or vacuum pumps, air or other gas compressors and fans; ventilating or recycling hoods incorporating a fan, whether or not fitted with filters. |
| 84.21 | | Centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases. |
| 8421.19 | | Filtering or purifying machinery and apparatus for liquids : |
| 8421.21 | 000 | For filtering or purifying water |
| 8421.22 | 000 | For filtering or purifying beverages other than water |
| 8421.23 | | Oil or petrol-filters for internal combustion engines |
| 8421.29 | | Filtering or purifying machinery and apparatus for gases : |
| 8421.31 | 000 | Intake air filters for internal combustion engines |
| 8421.39 | 010 | - Air filtering or purifying machinery, other than a dry battery type |
| 9002.20 | 000 | Filters |
| 9020.00 | 000 | Other breathing appliances and gas masks, excluding protective masks having neither mechanical parts nor replaceable filters |
