Thanks for the heads up fellas. I actually searched and found an old thread (Yes, I use the search function before asking questions!! Which is why my post count is low. Why ask questions like a dumbass when you can search and read and find your answer like someone who's educated?!?) suggesting to switch the preparation into a sterile vial. But now I see what you are saying, even though the plastic layer appears to have been punctured, the rubber underneath shows no visible signs. So again, thanks for the heads up.