Methods
100 IU insulin was added to PP bags containing 100 ml of 0.9% NaCl
solution(n = 6). The infusion was started at a rate of 2 ml/h using
infusion sets in the PVC structure. Insulin quantification was performed
in the samples taken both from the bag and from the end tip of the
infusion set during infusion. The stability of insulin solutions stored
at room (+24°C) and refrigerator (+4°C) temperatures were compared.
Samples were analyzed using reverse-phase high-performance liquid
chromatography.