Do you guy just stick the pin right through that plastic stopper? or unscrew the lid and suck it out that way? I ask because it looks like a plastic stopper not rubber.
so if your use a slin pin to draw it you will end up injecting with the same needle that went through the plastic? thats sounds like it might not be too sharp after. i am thinking i just might transfer all this stuff to empty regular b12 bottles i have