4.75-inch (120mm) curved PBEEK sampling catheter with Luer adapter. 1/8 inch (3.2mm) outer diameter compatible with Hanson Research/Erweka perforated head cover suitable for closed systems. The tube is long and installed at the top of the system, passing through the machine head to the dissolution cup. When used together with CANSTP-HR, it ensures that sampling always takes place at the same depth