Below is a list of Chile peppers and their Scoville Heat Units. Due to variations in growing conditions, soil and weather, peppers tend to vary between the lower and upper levels listed, but can go beyond them. http://ushotstuff.com/Heat.Scale.htm
An easy method for determining pepper hotness is Craig's Pepper Hotness scale.
The numbers indicate that how many ounces of salsa will have a detectable level of hotness when one ounce of pepper pods are added.
The Scoville Heat Scale.The Scoville scale is a measure of the 'hotness' of a chilli pepper or anything derived from chilli peppers, i.e. hot sauce. The scale is named after Wilbur Scoville who developed the test in 1912, for more information see Measuring Chilli Heat. http://www.chilliworld.com/FactFile/Scoville_Scale.asp
HAS COMPARISONS FOR SOME COMMON HOT PEPPERS. This company is a big seed company to the big growers and seed companies. they sell super cheap in bulk then they are packaged into tiny packs to make a fortune. Most are sold at $10 a pound. then sold at $3 a part of a gram. the seed selling companies have a huge profit margin on seeds. but it is expensive to sell seeds. http://www.biadchili.com/varieties-for-sale.html