Cleaning of blood by artificial method is called dialysis.It is done by a machine called a dialyzer.The blood of the patient is Powered by www.testvitals.com 2018/11/12 06:34 passed through the dialyzer which contain dialyzer fluid .Blood flows through the tubes of the dialyzer and dialysis fluid flows around these tubes.The waste materials move from blood to the dialysis fluid.The cleansed blood is returned to the body.