| 摘要 |
A system for dosing a stream of fluid with at least one active substance, the system comprising: a housing which defines a chamber having an inlet and an outlet to enable the flow of fluid through the chamber; and a block containing the active substance, the block comprising a body having an outer surface and a passage therethrough defining an inner surface, and wherein the block is positioned within the housing chamber in an operative position between the inlet and the outlet so that in use fluid flows over the inner and outer surfaces of the block to dissolve and/or erode the block. |
