lol i just suck the shit out and stick it in. i have never counted how much I get out if a vial. im sure I lose some during the processes of loading it and injecting but that is the way it goes. i always fill my pins .1 over any way. and there is always some in the vial i cant get. when it gone i toss it and open another. no big deal. but i tell ya im loving the 50ml jugs i get they never end nor do my cycles lol