I agree that one should not neglect safety. I do not know of anyone though that ever got an infection from using their draw pin to shoot with. I do know of a few that have gotten infections from using a draw pin over and over again for several injections. Using a clean and new draw pin and then immediately using it on a sterile bottle witll not cause any harm. I would think that you would have just as much of a chance of infection from getting out a new pin and exposing it to the air as you would of using a clean draw pin to inject.
No doctors ever switch the draw pin when they give you a shot. It is not necessary. Like I mentioned before, you dont switch the draw pin when you inject HCG with a slin pin do ya?
Also, that picture that was floating on the boards is BS IMO. I have done my own testing and the pins NEVER looked like that under magnification.