I question the validity of manufacturer's marketing terms. I have wondered for some time what the difference is between spec. grade and commercial grade, etc. Well, here's the answer...
It turns out there are really only four official standards:
1. general use
2. hospital
3. federal specifications (fed. spec.)
4. combination hospital/fed. spec.
I don't know if the standards are in this exact order. Perhaps someone with more knowledge can shed some light on this.