| 摘要 |
A dispenser (10) for dispensing a water treatment substance into water comprises an outer component (12) comprising a cylindrical wall (14) and at least one primary dispensing opening (20) in the wall (14). An inner component comprising a cylindrical wall (32) and at least one secondary dispensing opening (44) in the wall (32), with at least part of the wall (32) of the Inner component being located rotatably within the wall (14) of the outer component (12), is provided. The secondary dispensing opening (44) is located such that it can be moved into, and out of, register with the primary dispensing opening (20) on rotation of the outer and inner components relative to each other. A water treatment substance package (50) is located Inside the inner component. Buoyancy means (24), for imparting buoyancy to the dispenser (10), is provided In or on the outer component (12) and/or the inner component. -12 P innnnnnnnn pppp%.%~ 18 FIGi13 |
