DURAN® GL 45 HPLC Bottle, clear. Accepts two different rigid or semi-rigid tubing diameters (1.6 or 3.2 mm) Optional sterile pressure equalisation sets (0.2 µm syringe disc filter) Complete system comprising: DURAN® pressure plus+ laboratory bottle with 4-port GL 45 screw cap (PP), four screw connections (black, M8 thread), and 12x silicone seals (4x 1.6 mm, 4x 3.2 mm and 4x blanks)