Was the shrinkwrap missing or damaged when you purchased the batch?

All QF boxes come shrinkwrapped when they leave Spectrum Labs. If the shrinkwrap was missing or damaged, that can be an indicator of some monkey business going on (tampering).

I would go ahead and exchange the batch to be safe.

On one occasion, I had a QF bottle that was concave. I simply cracked the cap open to relieve vacuum and the bottle returned to its original shape. Two days later, I tested the bottle with an integrity strip and the SG, creatinine and pH were all still good to go. :thumbsup: