Which diluent is used to prepare Giapreza 2.5 mg/ml concentrate for solution for infusion?

Giapreza 2.5 mg/ml concentrate for solution for infusion is prepared by diluting 1 or 2 ml in sodium chloride 9 mg/ml (0.9%) solution for injection to a final concentration of 5,000 or 10,000 ng/ml.