Accelerated Shelf Life Testing Formula

Type desired taa trt values.

Accelerated shelf life testing formula.

Reference astm f1980 16 begin equation text accelerated aging time a a t frac text desired real time r t q 10 scriptsize left left t a a t r t right 10 right end equation. Storage temperature to be simulated c typical values are between 20 c and 25 c c. The common and conservative means of the accelerated aging calculation is based on the arrhenius equation which states that a 10 c increase in temperature doubles the rate of chemical reaction. It is recommended that accelerated shelf life studies be accompanied by a shelf life study conducted under normal storage conditions in order to determine the actual q10 value.

Values above 60 c are not recommended. The accelerated aging process is based on the relationship of temperature and reaction rate where an increase in temperature increases the reaction rate. Q10 value can be changed however default is q10 2 0 we recommend holding this constant. By analyzing the product s response to such tests engineers can make predictions about the service.

Shelf life is commonly estimated using the results data generated from both real time and accelerated shelf life testing. Shelf life to be simulated days days. In real time stability testing a product is stored at recommended storage conditions and monitored until it fails product specifications. Real time assessment is usually time and resource consuming.

In accelerated stability testing a product is stored at elevated stress conditions. Accelerated shelf life testing aslt kilcast and subramaniam 2000 can be incredibly useful when setting a shelf life for an ambient product as the developer does not need to wait for the whole of the product s shelf life to determine the end of shelf life. For example storage at a higher temperature can result in a prediction in say. The food industry has a great need to have a shelf life test in the minimum time possible because of the fierce competition sudden shortage of agricultural inputs opportunity loss and low unit value of the commodity.

Typically a q10 value of 2 is used as an initial shelf life estimate but this may not represent the actual acceleration factor of a specific food product. Accelerated aging time calculator astm f1980 07. Type the target shelf life days 2.