True peak width Wx [min]

Wx = width of peak at height x % of total

where

Wt

Tangent peak width, 4 sigma, obtained by intersecting tangents through the inflection points with the baseline

W4.4

Width at 4.4% of height (5 sigma width)

W5

Width at 5% of height (tailing peak width), used for USP tailing factor

W10

Width at 10% of height

W50

Width at 50% of height (true half-height peak width or 2.35 sigma).

 

Peak width at x % of the height