It is based on the use of isotonic saline solution and is inversely proportional to the viscosity of the solution.
The flow speed is calibrated at a temperature of 32ºC . Therefore, it is recommended to attach the flow regulator the patient's skin. During cold weather the pump should, therefore, be carried close to the body and be protected.
The accuracy of the flow rate is on average ± 10% of the nominal flow rate.
The flow speed was calibrated with the pump and the flow regulator at the same height. When positioning the balloon higher than the flow regulator the flow speed will increase and correspondingly decrease when positioning the balloon lower than the flow regulator. When connected the pump should be carried at body level.