Device for the intentional and controllable distribution of a liquid or viscous material

A device for selective, controllable release of a fluid, a viscous mass or a suspension of solid particles in a fluid, comprising:

• a cylindrical container;
• a top enclosing a first end of the container, in combination with a funnel-shaped container seal;
• a bottom enclosing a second end of the container opposite to the first end, wherein the bottom includes a clamping device for receiving electrical components, the electrical components including an electrochemical gas evolution cell, an adjustable load resistor and electrical contacts which combine to develop an external current circuit, wherein the gas evolution cell has a tablet-shaped construction including a metal enclosure receiving a gas diffusion electrode, a counter electrode and an aqueous electrolyte, and wherein the external current circuit is connected with the gas evolution cell to activate the gas evolution cell;
• and
• a cylindrical piston slidingly received within the container and dividing the container into a pressurized gas chamber and a mass chamber, wherein the funnel-shaped container seal faces the mass chamber of the container, and wherein the piston includes a circumference provided with an annular seal and a coupled pair of coaxial plugs for causing telescoping movement of the piston