Accelerated Shelf Life Testing Formula

By analyzing the product s response to such tests engineers can make predictions about the service.

Accelerated shelf life testing formula.

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. 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. Q10 value can be changed however default is q10 2 0 we recommend holding this constant. Shelf life to be simulated days days.

Values above 60 c are not recommended. 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. Shelf life is commonly estimated using the results data generated from both real time and accelerated shelf life testing. Accelerated aging temperature c typical values are 50 c 55 c and 60 c.

The accelerated aging process is based on the relationship of temperature and reaction rate where an increase in temperature increases the reaction rate. Accelerated aging time calculator astm f1980 07. 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. In accelerated stability testing a product is stored at elevated stress conditions.

Accelerated life testing is the process of testing a product by subjecting it to conditions stress strain temperatures voltage vibration rate pressure etc in excess of its normal service parameters in an effort to uncover faults and potential modes of failure in a short amount of time. It is used to simulate real shelf life aging and is conducted to validate shelf life claims and document expiration dates. Real time assessment is usually time and resource consuming. 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.

Type desired taa trt values. In real time stability testing a product is stored at recommended storage conditions and monitored until it fails product specifications. For example storage at a higher temperature can result in a prediction in say.