Re: Label - Acceptance Criteria for adhesion
Not sure about a standard / regulatory requirement but you'll certainly want to test it in anticipated transportation / storage conditions (heat, cold, humidity). Acceptance would include no loss of adhesion (falls off, edges peel up) and legibility (no smearing, smudging, etc.). If there are any fluids it could be exposed to, a rub test after exposure would be a good idea (again acceptance based on adhesion and legibility).
Hopefully someone can comment on standards / regulations.