Manufacturer: Bayer Diabetes care Contour next control solution low, 2.5 ml. For use with Bayer's contour next test strips. Works specifically to check the accuracy of your glucose strips. Easily use this product by applying one drop of solution onto a glucose test strip and continue as though it were a normal glucose test. Afterwards, make sure that your test results from this are within the acceptable range found on the vial of your test strips. Recommended use. -On a monthly basis. -Each time you replace your glucose test strips. -After changing the batteries of your meter. -If you are questioning the accuracy of your test results. For use with the Bayer Contour Next Ez Meter only. Call the manufacturer of your meter immediately if the results are out of range.