ABBOTT DIABETES CARE Freestyle Hi/Lo Control With Range. Each box contains 1 vial each Hi and Low Control solution.The FreeStyle Control Solution is a red liquid that allows you to perform quality control checks to ensure that your FreeStyle Blood Glucose Monitoring System is working properly and that your blood glucose results are reliable. For use with all freestyle meters (freestyle/freestyle lite, freestyle freedom/freedom lite, Mini, Navigator, Insulinx)