The present invention relates to a single use tubular straw for conditioning of a liquid passing through including； a cylindrical body for passing of the liquid； a bottom opening for inflow of the liquid in the cylindrical body； a top opening for outflow of the liquid from the cylindrical body； at least one conditioning agent for the conditioning of the liquid passing through the cylindrical body； and a seal for closing the top opening and the bottom opening of the cylindrical body. The conditioning agent is disposed on the inner surface of the cylindrical body and get dissolved in the liquid on passing of the liquid through the cylindrical body providing the conditioned liquid at the top opening of the cylindrical body.
