Convenient, easy to open and close lid with click lock and gasket to seal when not in use.rDouble screw hinge made of rust-free stainless steel for high durability and stability.rSplash guard with downward-facing air channels ensuring safe ventilation that carries splashing fluids directly back into the funnel.rThe dirt sieve traps the stir bars as well as large dirt particles. ISO bottles can easily be placed on top of it for rinsing. The mesh size has been optimized and ensures fast solvent flow.rThe ball valve only opens while the funnel is filling and then closes automatically.r11 different threads from GL45 to S95 for many types of drums and bottles.rSafety lance for the safe and clean flow of sensitive chemicals without splashing.