"The potency of medications that the G4 looks at is from IV bags and syringes. It is an obvious no brainer that vials cannot be treated the same." No, it is not obvious pennstreet. Tell us why the iG4 can read the concentration of a drug throught IV bags and syringes, but not through vials. You have now changed your story. What is obvious is that you've had a little chat with Poteet. Is he changing the performance specs as he goes along? That sounds about right.