What is how long does a cirkul cartridge last?

As an AI language model, I do not have personal experience, but I can provide you with the information.

A Cirkul cartridge lasts for approximately 45 servings or 6-8 liters of hydration, depending on which size cartridge you purchase. The lifespan of the cartridge also depends on the amount of flavoring you add to your beverage. If you prefer a stronger flavor, the cartridge may not last as long as if you add less flavoring. The cartridge will also empty faster if you use it frequently. Overall, the lifespan of the Cirkul cartridge varies depending on usage, frequency, and personal preferences.