I have a hypothetical vacuum flask adapted from one of Jugg Eared Flusshausen's bespoke urinal?

My question is this. Having adapted an old BMW tyre pump to evacuate every last atom from the flask what am I left with? Do Ihave a bit of pristine spacetime in my vase and if can I pump that out as well. What will be the difference between a flask full of spacetime and one with the spacetime removed.