When I imagine a square bottle in my Grand, I get a view of the bottle's right side with the right edge.
What happens, if the bottle is squeezed frequently close to the edge ?
I hate to spoil the Party, but my current round bottle is 2,5 years old and looks like new.
I wonder, how a rectangular bottle's edges would look like after around 900 refills ?
This option seems to require some quality assurance procedures...
Vapage sells 9ml round bottles that will work in the Grand. You must drill out the drip tip of the bottle for the tube.