Histomorphometry: MMA not polymerizing, either liquid or semi-soft? Same protocol. Now all of a sudden?

We have been using the same MMA, BP and DP ratio. I'm stumped that we never had issues in the past and all of a sudden we are having this issue. Perhaps 1 or 2 blocks out of 25-30 or so but now it...

07 July 2016 3,064 3 View