Accelerated Shelf Life Testing Formula

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.

Accelerated shelf life testing formula.

Type the target shelf life days 2. Type desired taa trt values. Storage temperature to be simulated c typical values are between 20 c and 25 c c. 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.

Real time assessment is usually time and resource consuming. The accelerated aging process is based on the relationship of temperature and reaction rate where an increase in temperature increases the reaction rate. In accelerated stability testing a product is stored at elevated stress conditions. Q10 value can be changed however default is q10 2 0 we recommend holding this constant.

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. By analyzing the product s response to such tests engineers can make predictions about the service. It is used to simulate real shelf life aging and is conducted to validate shelf life claims and document expiration dates. In real time stability testing a product is stored at recommended storage conditions and monitored until it fails product specifications.

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. Shelf life to be simulated days days. 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 temperature c typical values are 50 c 55 c and 60 c. For example storage at a higher temperature can result in a prediction in say. Accelerated aging time calculator astm f1980 07.