TARIC 3917.40.00.20 — Plastic fittings (kit of nuts and ferrules or nuts) and connectors: -threaded, -supported with or without a stainless steel ring, -suitable for a maximum working pressure rate of 2,7 MPa or more but not more than 114 MPa,  for tubings with: -outer diameter of 0,33 mm or more but not more than 3,3 mm, -suitable for a maximum working pressure rate of 2,7 MPa or more but not more than 114 MPa, -suitable for all solutions used in chromatography, for use in the production of chromatographic systems