About Pepper Spray

One hundred years ago, an American pharmacist named Wilbur Scoville developed a scale to measure the intensity of a pepper's burn. The scale - as you can see on the widely used chart to the left - puts sweet bell peppers at the zero mark and the blistering habanero at up to 350,000 Scoville Units.

via About Pepper Spray | Guest Blog, Scientific American Blog Network