The content of the infusion bottle is dissolved in 40 ml of one of the following calcium-free infusion solutions by swirling, resulting in a concentration of 0.05 g/ ml: sodium chloride solution 0.9%, sodium chloride (0.45%) and glucose (2.5%) solution, glucose solution 5% or 10%, dextran 6% in glucose solution 5%, hydroxyethylen starch solution 6 – 10%.