Most companies its hard to see exactly what is in the vial. The label usually wraps around the vial leaving only a small strip for visibility. Making it hard to see floaties, and such. Making looking at the oil in the vial a job in its own. Have you ever had to try and hold up a vial and look at the bottom, to see in the vial. You never have to worry about this with e/p. Clean, clear
There is no way to mask or hide anything. Everything is up front and in the open fo you to view at any angle. Where else have you seen this.