If you ever swallow a razor blade, don’t panic. The human frame is more succesful than you watched. Acids are ranked on a scale from 0 to 14—the lower the pH level, the stronger the acid. Human belly acid is typically 1.0 to two.Zero, which means that it has a very strong pH. In a have a look at published inside the magazine Gastrointestinal Endoscopy, scientists determined that the “thickened lower back of a single-edged blade” dissolved after two hours of immersion in stomach acid.