ar-r syringe question

I've noticed that when measuring a dosage with the ar-r syringe the liquid does not go all the way up to the measurement marking that I line up the stopper at. Instead there is a little space of air from where the liquid stops to the stopper. Is this to compensate for the part of the liquid that is at the very tip of the syringe or should i raise the stopper more until I see the liquid reach the measurement marking I am aiming for?



Thanks.

ar-r syringe question