Abstract: A hand-held applicator (10) for collecting, mixing, diluting and discharging a sample liquid, comprising a main body (20) having an inlet-aperture (24), an outlet-aperture (26) and a chamber (22) for storing a liquid solution, wherein the chamber is connected to the inlet-aperture and the outlet-aperture, a lid (12) for covering the inlet-aperture and a tube (40), moveably supported in the inlet-aperture when the lid is covering the upper portion of the main body, wherein the tube (40) is moveable between a predetermined position outside the chamber and a position, in which the tube is at least partly located in the chamber.

Abstract: A hand-held applicator (10) for collecting, mixing, diluting and discharging a sample liquid, comprising a main body (20) having an inlet-aperture (24), an outlet-aperture (26) and a chamber (22) for storing a liquid solution, wherein the chamber is connected to the inlet-aperture and the outlet-aperture, a lid (12) for covering the inlet-aperture and a tube (40), moveably supported in the inlet-aperture when the lid is covering the upper portion of the main body, wherein the tube (40) is moveable between a predetermined position outside the chamber and a position, in which the tube is at least partly located in the chamber.

Abstract: A method for providing selectable real-time audio connections between an executing communication unit (1) and a plurality of further communication units (2) in a communication group (3). The executing communication unit (1) establishes a connection to a data network, determines further communication units (2), forms a communication group (3) that comprises the executing communication unit (1) and at least one further communication unit (2), defines an address assignment for an audio channel to the at least one remote communication unit, receives a user input for activation of the real-time audio transmission by selecting an activation element (4), and opens the audio channel.