Device for delaying introduction of agents to a cistern

A modular apparatus for fixing in place within a cistern, operated and activated only by forces of gravity and rising and falling water levels acting on buoyant members for creating a dose of treated water by mixing a fixed amount of cistern water with a dose of sanitizing agent and isolating said treated water from a body of surrounding quiescent water in the cistern, until releasing said treated water into the cistern near an end of a cistern flushing cycle of a flushing toilet, enabling the delaying of mixing of said treated water with a last portion of untreated cistern water to flush into a toilet bowl;

• preferably after waste has been flushed away inside the toilet bowl;
• said treated water will be applied to the whole internal surface area of the toilet bowl over which treated cistern water flows and under a rim of the toilet bowl;
• the delaying of the mixing of said treated water with the last portion of untreated cistern water resulting in most of the treated water remaining within the toilet bowl between flushes, the apparatus, comprising:
• a body comprising a refillable active ingredient holding container adapted to hold the sanitizing agent, said holding container including a base, a wall and a block-able opening through which the sanitizing agent may be dispensed;
• said holding container may be configured to enable either the use of a solid or liquid sanitizing agent, and a second container disposed generally below said holding container;
• a first buoyant member moveable relative to, said body, said first buoyant member being configured to directly block or unblock said block-able opening to release the sanitizing agent from said holding container directly into the second container when water in the second container reaches a first predetermined level;
• a second buoyant member movable relative to said body and configured to block and unblock an opening in a base of said second container;
• said opening in the base of said second container is an outlet to allow the treated water to exit the second container into the cistern when water in the cistern reaches a second predetermined level;
• a third buoyant member movable relative to said body, wherein the second container comprises an inlet opening to allow cistern water to enter into said second container, and said third buoyant floating member is configured to directly block or unblock said inlet opening of the second container when water in the second container reaches a third predetermined level;
• said apparatus operating, wherein said first buoyant member, second buoyant member and third buoyant members move at different predetermined water levels to directly block or unblock their respective openings, said first, second, and third buoyant members are not required to perform any secondary functions other than blocking or unblocking their respective openings, and;
• an adjustable securing arm to secure said body to a portion of the cistern, to be partially submerged in an operating position, without the need for the customer to modify the cistern or attach any part of the apparatus to any moving parts of an operating mechanism of the cistern.