Test strips should be stored in closed vials/bags,in a cool, dry place out of direct sunlight.
The ideal condition is 25C (77F). A range of 20C (68F) – 30C (86F) is acceptable. Test strips should not be stored in a refrigerator or freezer. Test Strips should not be stored where they can be exposed to heat (for example, inside a vehicle or shed).
In some cases, our test strips are packaged in a flip-top vial which has a desiccant liner included to prevent moisture from reacting with the test strips prior to use. This desiccant liner provides a very dry environment inside when closed. The capacity of the liner is sufficient to last over 5 years of opening and closing, as long as it is closed promptly when not in use. Leaving the vial open will shorten the shelf-life of the desiccant liner. Be careful not to introduce moisture into the vial with wet fingers.
Many of our test strips have a minimum shelf-life of 2 years when stored and handled correctly. In reality, the strips are stable for much longer. We have experienced test strips over 3 years old that still perform to specification.
We suggest the test strips be used within one year from the date of opening, given proper storage and handling.