This Alcohol Breath Tester is designed for a single use only, not reusable. If you are out partying and want to make sure you are safe to drive, the only way to make sure is to check yourself. Storage is easy - store out of direct sunlight in an environment between -10C and +40C. This Alcohol Breath Tester - Single is guaranteed usable for 18 months from date of manufacture, and comes with easy to understand illustrated instructions.
