You calculate accelerated aging by applying the Arrhenius equation with a reaction rate multiplier called the Q10 factor. The Q10 factor estimates how much faster a chemical reaction happens when you raise the temperature by 10°C.
Under the ASTM F1980 standard, a conservative Q10 factor of 2.0 is used for medical device packaging.
To run the calculation, find the temperature difference between your oven and the ambient storage environment. For a typical lab, the ambient temperature is set at 22°C, and the aging oven runs at 55°C.
This 33°C difference means the reaction rate doubles roughly 3.3 times, yielding an Accelerated Aging Factor of 9.85.