Thank you Lisa!
Six.. I try to buy my Terranova 2.1 directly from Double Helix, that way I know what batch I'm getting. They write the pull date on the label. I occasionally buy from other places but they all go in seperate bins... all of them... I have 14 slots for TN 2.1, and I just ordered more (thanks a lot Tracidawn) I think I'll go hide under a rock now.