How to use After opening a new pack of Accu-Chek Sensor test strips, you must remove the old coding chip from your meter and replace it with the coding chip from the new pack. Accu-Chek Advantage/ Sensor Comfort test strips for the better option to test simply and reliably. The comfort curve makes it particularly easy to apply the blood drop on the strip. Features Accu-Chek Sensor Test Strips Glucose test strips are used for the quantitative determination of blood glucose in the range of 0.6-33.3 mmol/L. Suitable for self-testing Contents One coding chip 1 package insert Adviced for Sensor Sensor Complete Comfort Advantage Precaution When you take a test strip from the vial, make sure you close it immediately afterwards to preserve strip quality.