The invention is a machine that converts different blood types A ,B,AB to the O universal blood type donor by modifying redblood cell structure. The invention is composed of a dosage unit 1 with the solenoid valve as a major component to add precise quantities of blood and specific enzyme for each blood type, an incubation unit works works with a crank connecting rod system to enhance the enzyme catalysis process , a purification unit composed of antibody coated membranes for blood purification and a dosage unit 2 with a mass sensor which indicates the end of the procedure. The invention converts blood after being donated and tested for blood typing and provides the appropriate conditions for blood during the procedure.
