Kanylen kan således gå igennem med en vinkel og bøje, brække eller forhindre korrekt udtagelse af hætteglassets indhold.
If the needle is not correctly lined up with the centre of the stopper, you will feel constant resistance as it goes through the stopper and no “ pop .” The needle may then enter at an angle and bend, break or prevent proper removal of the vial contents.