Next, select the package that you want to protect the product in the distribution channels. This will enable you to generate data more pertinent to the product's actual shelf life. Storage temperature conditions shou then be chosen which fit the product and give reliable results in a reasonable amount of time. Common temperatures used would be 20, 30, 40, and 55 C (68 86, 104, and 131 F). At least two temperatures are required with three or four preferred for more accurat predictions. A control, stored at 0oF, can also be use
The frequency of the analytical testing is the next important decision. The higher the storage temperatu the more frequent should be the testing. Weekly tests are common for most products unless a Q10 is known
Labuza4 has developed the following equation for testing frequency :