The positive fact that the dead volume or liquid remaining in the device after treatment administration is negligible and that the NE-U22V can nebulize, very well, as little as 0.2 mL of liquid, suggests that medication no longer requires dilution.
We did try several experiments where we attempted to nebulize high molecular weight substances (diluted egg whites and hepastarch solutions, for example) just to see how easily the transducer holes might or might not, plug up.