[ Problem Point ]
We have no idea to concentrate without oxygen.
[ ⇒Kaizen Point ]
Nitrogen gas was blown into a sample directly and it was concentrated.
The volatile low solvent like DMSO and water could also be concentrated quickly by using the nitrogen gas which heated decompression.
Stainless steel and super engineering plastics were used, so it could also be used for an expensive solvent of corrosive nature.
Related page:
No.47 Replacement of gas in laboratory electrified 
No.65 Small high-temperature tunnel furnace heat source 
No.68 Manufacturing of dryness steam of electric boiler 
No.71 Manufacturing of superheated steam 
No.5 Heat-shrinkable tubing 
No.8 Dryness of print 
No.5 Heating time control for condition setting 
No.6 Control of a dry time for solvent system adhesive