The invention relates to a kit (1) for producing a radiopharmaceutical (8), comprising: a cation exchange cartridge (2) a reaction vial (3) having a marker precursor a solution vial (4) having a solvent = an elution vial (5) having a sterile solution comprising common salt (NaCl) and hydrochloric acid (HCl) and a buffer salt. The invention further relates to a method for producing a radiopharmaceutical (8).
