With the endangered species of R22 soon to become extinct, it makes sense to save some specimens in captivity.
What I'm saying is, storing reclaimed 22 for future jobs when it becomes unobtainable.
To this end, I see a few gizmos that analyze the refrigerant itself, but is there anything around that will specifically tell you how clean the gas is, and by eztention whether it can be cleaned to use again?
I know a bloke who likes to reclaim the gas from splits he replaces for future use, seems smart but I'd prefer to know my gas is good.

Cheers lads.