I just ran 200g of kief in the default column today, no problems. I would imagine bubble, being less concentrated than kief, should be ok too. However I should mention that the initial flood took 2 minutes. I opted to run it in a 'shower' style rather than the usual flood/drains cycles. Also during the initial flood the system reached -20"hg vacuum before the butane reached the vent tube. Therefore next time I do this, I will probably leave the appion off until the 'tane reaches the bottom of the vent tube to avoid dry running the pump.A friend of mine has many pounds of bubble he can't get rid of.
Is it possible to run bubble in a closed loop extractor?
Would the solvent flow or would it be stopped up by a gooey impenetrable
mass of bubble?
With the bubble if you are afraid of an impenetrable mass, don't pack it too tightly. I packed 200g of kief so that there was plenty of space on both ends of the column, which may explain the long flood time. After running 'tane through it for a few minutes though it dissolved.