Infusate holder

1. An infusate holder, comprising:

(i) a base;

(ii) exterior walls connected to the base and upwardly extending from the base;

(iii) at least two interior compartments; wherein the at least two interior compartments are each configured to receive and are complementary to one of at least two infusate containers; and

(iv) wherein each of the at least two infusate containers holds at least one infusate selected from the group of a solution source, a solid infusate source, or a powdered infusate source;

(v) the at least two interior compartments each having an interior wall connected to the base and upwardly extending from the base and defining each interior compartment of the infusate holder wherein a vertical axis of each interior compartment is aligned to one or more fluid connectors disposed on a dialysis machine; and

(vi) wherein the infusate holder is complementary to a receiving compartment on the dialysis machine;

wherein each of the at least two interior compartments are complementary to one of the at least two infusate containers;

wherein every interior compartment included in the infusate holder has a size and/or shape different from every other interior compartment; the at least two interior compartments configured to define only one arrangement of the at least two infusate containers within the infusate holder;

the one or more fluid connectors fluidly connectable to the at least two infusate containers; and

wherein the one or more fluid connectors disposed on the dialysis machine are positioned on one or more moveable paddles; the one or more moveable paddles rotatable around a hinge; wherein the one or more fluid connectors fluidly connect the at least two infusate containers to at least one fluid line on a fluid flow path.

2. The infusate holder of claim 1 , wherein at least one of the at least two interior compartments contains a filter and a draw tube extending downwardly through the filter from a connector on top of the interior compartment.

3. The infusate holder of claim 1 , further comprising a lid covering a top of the infusate holder, the lid having openings aligned with each of the interior compartments.

4. The infusate holder of claim 3 , wherein the lid forms an air tight seal with each of the interior compartments.

5. The infusate holder of claim 1 , at least one of the exterior walls and at least one of the interior walls defining at least one of the interior compartments having an inwardly tapered bottom portion.

6. The infusate holder of claim 1 , wherein at least one of the at least two interior compartments comprises a fitting feature configured along the interior wall wherein the fitting feature is selected from the group of a protrusion, an indentation, a groove, a ridge, a curve, a wedge, and a complementary surface comprising a specified depth, incline, or diameter capable of forming a connection or fit to a corresponding fitting feature.

7. The infusate holder of claim 1 , wherein the at least two interior compartments comprise at least four interior compartments; wherein each of the at least four interior compartments have a size and/or shape different from each of the other interior compartments.

8. A dialysis system, comprising:

an infusate holder; the infusate holder comprising:

(i) a base;

(ii) exterior walls connected to the base and upwardly extending from the base; and

(iii) at least two interior compartments; wherein each of the at least two interior compartments are each configured to hold one of at least two infusate containers; the at least two interior compartments each having an interior wall connected to the base and upwardly extending from the base and defining each interior compartment of the infusate holder wherein a vertical axis of each interior compartment is aligned to one or more fluid connectors disposed on a dialysis machine; and

(iv) wherein the infusate holder is complementary to a receiving compartment on the dialysis machine; and the dialysis machine, comprising:

(i) a dialysate flow path;

(ii) the receiving compartment on the dialysis machine having a size and shape complementary to the infusate holder;

(iii) the one or more fluid connectors fluidly connecting each of the infusate containers to the dialysate flow path; and

(iv) at least one pump controlling fluid movement through the one or more fluid connectors;

wherein each of the at least two interior compartments are complementary to one of the at least two infusate containers;

wherein every interior compartment included in the infusate holder has a size and/or shape different from every other interior compartment; the at least two interior compartments configured to define only one arrangement of the at least two infusate containers within the infusate holder;

the one or more fluid connectors fluidly connectable to each infusate container; and

wherein the one or more fluid connectors disposed on the dialysis machine are positioned on one or more moveable paddles; the one or more moveable paddles rotatable around a hinge; wherein the one or more fluid connectors fluidly connect the at least two infusate containers to at least one fluid line on the dialysate flow path.

9. The dialysis system of claim 8 , wherein the infusate containers are selected from the group consisting of a sodium bicarbonate container, a sodium chloride container, a cation infusate container, and combinations thereof.

10. The dialysis system of claim 8 , further comprising a lid for the infusate holder, the lid having two or more openings aligned with the at least two interior compartments.

11. The dialysis system of claim 8 , the infusate holder comprising at least a third interior compartment.

12. The dialysis system of claim 8 , wherein the infusate containers contain infusates selected from the group consisting of sodium bicarbonate, sodium chloride, and cation infusates.

13. The dialysis system of claim 8 , further comprising a lid for the infusate holder, the lid having two or more openings aligned with the at least two interior compartments.

14. The dialysis system of claim 13 , the lid forming an air tight seal with the infusate holder.

15. The dialysis system of claim 13 , further comprising draw tubes in each of the at least two interior compartments, the draw tubes extending downwardly from the openings in the lid into each of the at least two interior compartments; the draw tubes fluidly connectable to the one or more fluid connectors.

16. The dialysis system of claim 15 , further comprising a filter within at least one of the at least two interior compartments, the filter disposed above the base of the infusate holder; at least one of the draw tubes extending through the filter.

17. The dialysis system of claim 8 , further comprising a locking mechanism preventing the infusate holder from moving after insertion into the receiving compartment when the locking mechanism is in a locked state.

18. The dialysis system of claim 8 , wherein the infusate holder is removable from the dialysis machine.

19. The dialysis system of claim 18 , further comprising a handle disposed on at least one of the exterior walls of the infusate holder.

20. The dialysis system of claim 8 , wherein at least one of the at least one pump is a bidirectional pump.

21. The dialysis system of claim 12 , wherein the two or more infusate containers comprise an infusate container containing sodium chloride and an infusate container containing sodium bicarbonate; wherein the infusate container containing sodium chloride and the infusate container containing sodium bicarbonate are fluidly connectable to a valve; wherein the valve is fluidly connected to the dialysate flow path upstream of a sorbent cartridge and downstream of the sorbent cartridge.

22. The dialysis system of claim 8 , further comprising at least one fitting feature on an exterior surface of the infusate holder; the at least one fitting feature complementary to a corresponding fitting feature on an interior surface of the receiving compartment.