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Hi, Nice work! You said that to get a purer gas you need a second stage. I have read some papers and many of them said that the purity of the nitrogen, in a nitrogen generator by the psa method, is inversely proportional to the flow rate. Have you try that?
Hi, I am not very sure about how to manage nitrogen or argon, so my question is: are all the valves you used especially made for the use of this types of gases? Is it dangerous to use solenoids valves?