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ASLT Extrapolation Check

Enter the temperatures from your accelerated shelf-life test and the temperature your product will actually be stored at. You'll see how far the prediction reaches, and how far off predictions at that distance have been in published food studies.

°C

The real storage temperature: about 4 °C for a refrigerator, 20–25 °C for a shelf or pantry.

2. Temperatures you tested at
Test temperatureMeasured shelf life (optional)

The hot chamber temperatures from your accelerated test. Add the shelf life measured at each one to get a predicted shelf life; leave it blank to check distance only.

Loaded with an example: A dry snack tested at 35, 45 and 55 °C, stored at 25 °C.

— —× the tested range

—of published predictions at this distance were within 2×
—predicted shelf life at storage temperature
—likely true shelf life (middle half of published outcomes)
What to do about it

    The research behind this tool
    When Can You Trust Your Shelf-Life Test?Plain-language guide: what 113 studies show, five questions to ask, and how to design a better test.
    Technical report (PDF)How Well Does Arrhenius Extrapolation Predict Food Shelf Life? Methods, data, risk of bias and limitations.