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A comment on Unimpeded Permeation of Water Through Helium-Leak–Tight Graphene-Based Membranes. Parent comment

Re:Unimpeded Permeation of Water Through Helium-Leak–Tight G... by andrewflnr on Wednesday February 15, 2023 @11:32PM (#34815050)
Do you have a good reference or search terms for that reverse flow thing? It sounds crazy. Searching ["reverse flow" of helium vacuum pump] doesn't seem to be doing anything for me, at least as a layman.
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Re:Unimpeded Permeation of Water Through Helium-Leak–Tight G... by MisterTea on Thursday February 16, 2023 @08:40AM (#34818415)
It's a term used by the machine maker so it might be specific to that industry/manufacturer. This is a newer version of the machine: https://www.vicleakdetection.com/product/52/MS-40GT
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