Peak Purity

[isuphysics]

Can someone explain to me how peak purity is calculated?

[seamoro]

Go to waters website.....check out there online libary...you will have to register to do this....you will get all the info you need there

[DR]

Agilent has an alternative approach to assigning peak purities as well.

Both methods essentially look for any differences in the changes across the UV spectrum at either end of a given peak or they compare either end to the middle of the peak, the assumption being that if there are two different substances nearly co-eluting, they will have at least slightly different UV spectra, so you look for these differences.