#$%^&*AU2013251285B220150129.pdf#####METHOD FOR RELEASE OF ACTIVE SUBSTANCES AND ACTIVE SUBSTANCE RELEASE SYSTEMS ABSTRACT Device for releasing a fluid active substance, comprises at least one hollow space (2, 14) containing the fluid active substance. The device contains water and a reducing agent (10, 38), which are or can be made to be in communication such that a chemical reaction of the water and the reducing agent (10, 38) produces gas in the device and the gas effectively communicates with the fluid active substance such that the gas pressure thus generated presses the fluid active substance out of at least one opening (22) of the hollow space (2, 14) out of the device.2/3 22 24 20 28 30 34 36 33 32 32 2 24 20 26 38 Figure 3 3332 30 3 36 42 22 24 20 28 26 3832 40 Figure 4
