Dialysate is the material that passes through the membrane in dialysis and usually contains substances that diffuse easily in solution. This is also known as a diffusate. It is a chemical bath (serum) that is used to draw waste products out of the blood. Exposure to high amount of dialysate at a unit of 3K(in accordance to the level of potassium) which is quite a standard treatment for haemodialysis when a patient suffers from acute renal failure. The chemical bath can be administered at various levels, and is lowered depending on the severity. Hope that helps.