Despite warnings about introducing lethal dihydrogen monoxide into the barrels of vac fillers, i usually test newly acquired vac fillers with H2O. I do this for 2 reasons: to see if the filling system works & if not, whether a little moisture will revitalize the packing unit. Once in a while it does. This 1938-1942 Autograph Viceroy took up 3+ mL a few days after a test and soak.
https://imgur.com/a/t55KM8q
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