Is it possible for the stopper to breakdown and chip off inot small pieces? When I drew up some Enth i saw a small iece of black something in there. So I drew up again and then I saw it again in another syringe. Could the stopper be falling apart? The only thing I could think of is that it is pretty cold here and maybe the temp change helps it to break down but seriously, it isn't that cold. ANy help? I have to toss the whole batch now? Sound like it huh.