For intravenous use, infusion systems with Actrapid at concentrations 0.05 IU/ ml - 1.0 IU/ ml insulin human in the following infusion fluids; 0.9% sodium chloride, 5% dextrose and 10% dextrose inclusive 40 mmol/ l potassium chloride, using polypropylene infusion bags, are stable at room temperature for 24 hours.