The Scoville scale is the world recognised scale for measuring the heat in chillies and other peppers.
The Scoville scale was created in the early 1900’s by Wilbur L. Scoville who was a pharmacist.
Read the full post at Growing Chillies. It explains more about the Scoville Scale and how it works. there is also some examples of the most common chillies and how they rate on the Scoville Scale.
http://growingchillies.net for Scoville Scale information and lots more information about growing chillies.