Filtration system for preparation of fluids for medical applications

A system for generating a batch of a treatment fluid at a point of use and for performing a treatment on a patient, the system comprising:

• a peristaltic pump;
• a disposable cartridge connected to a fluid circuit that includes
• a water source line, a filter module containing a first filter stage upstream of a second filter stage, the second filter stage providing redundant filtration to the first filter stage;
• a connecting fluid line configured to receive concentrated treatment fluid from a concentrate container,
• a batch container, and
• a sampling line all fluidly connected by one or more fluid lines of the fluid circuit;
• and
• a conductivity sensor fluidly connected to the batch container through the sampling line;
• controllable actuators configured to selectively open and close and thereby start and stop fluid flow;
• and
• a controller configured to control the controllable actuators and the peristaltic pump to perform a dilution function of the concentrated treatment fluid that forms the treatment fluid in the batch container.