The point is: the colder the better. However, there are some practicality issues as well. Frozen papers last longer than refrigerated papers, but they need to be thawed before use, and well packaged to avoid moisture. That’s too cumbersome and not without danger for general and frequent use. A good compromise is refrigerator storage well above freezing. I have used papers as old as 10 years that way without ill effect other than a small loss in speed and contrast, which is easily compensated for.
#photography