jfreshxo
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- Aug 13, 2014
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I see ppl who will want to draw up 1ml, so they take their needle and pull the plunger to have 1ml of air, then they stick the needle in the vial and inject the air into the vial to create pressure right? Why do we need to create pressure? Is the reason we do this is it makes it easier to draw it up or what? Is it necessary? Thanks