Is N2 really mandatory with coils?

[MWCanna]

I don’t say it to be a dick brother. You asked the same question last week and got your answer, didn’t take me long searching to find it. Try it both ways and report back

Collection not filling fully

Your material columns are holding on to the solvent. Butane chases the cold…. The coldest thing in your set up is the material column. Push with n2 or dump the slurry from the material column jacket…… Then if you start recovery that will begin to really help draw the extra solvent into the collection vessel