In a die assembly, plural pairs of extrusion ports are set up on concentric circles different in diameter. In one exemplary embodiment, the device comprises a hollow ring having an outer wall fixably attached to a meter flange that is inserted between two sections of pipe, and an inner wall on which a sensor is mounted to facilitate accurate flow measurements. The contact member 24 is held in the annular space formed between the nose extension 23 and discharge port 17, the contact member 24 being provided so as to project from free end of the nose extension. A method of using the aqueous based pharmaceutical composition is also disclosed which includes the steps of expectorating, gargling, obtaining, pouring, receiving, and swishing. Digital data sorted into an order in accordance with a priority specified by the user is downloaded to a user terminal. Each flow channel is fluidly coupled to one or more of the ports for receiving fluid flow from outside the body and an outlet proximate to the upper end portion of the body for providing the received fluid flow.