What Is Strontium 90
What Is Strontium 90 . This isotope, formed by nuclear explosions, is considered the most dangerous constituent of fallout. What does it look like? Strontium90 SimpleLab Tap Score from mytapscore.com Medical definition of strontium 90 : What does it look like? Because of this, strontium is often recommended by alternative practitioners as a natural remedy for osteoporosis (bone mineral loss).