Preventing O2 ingress when cold-crashing for lagering - ideas?

[Jaybird]

https://www.norcalbrewingsolutions.com/store/CO2-Carbon-Dioxide-Harvester-Kit.html

I use this with 1/2 gallon caning jars

Cheers
Jay

 

[jerrylotto]

a

Surely the units should be in cm/hr/pa, and with asymptotic behavior? I don't think there is one value available.

edit: also, 0.1cm3/hr is 250ppb per day into 19L, so let's hope it's not that high : )

Not through a small air lock. That's the maximum through fully exposed surfaces.