Looking at our syringes, it was noted that the ends of the plungers are not level on the perpendicular to the wall of the body of the syringe.This leads to variance in where the rubber end of the plunger meets the lines for measuring volumes depending on how the plunger is rotated in the syringe.For the worst offender i found, the rubber end of the plunger has come away from the plunger itself visibly, with a height variance of greater than 0.1 ml worth of volume at opposite ends of the rubber end of the plunger.As well, at the extremes this problem makes the end of the plunger veer off of center, which i am not certain of the implications but it seems reasonable that this may lead to some medication being left in the syringe or not activating the needle retraction system properly.
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