shelf life

https://doi.org/10.1351/goldbook.08046

Time interval during which a reference material producer warrants the material stability of the reference material.

Note:
The shelf life is equivalent to the "period of validity" of the reference material certificate and is ended by the "expiry date".

Source:
PAC, 2021, 93, 997. 'Metrological and quality concepts in analytical chemistry (IUPAC Recommendations 2021)' on page 1017 (https://doi.org/10.1515/pac-2019-0819)