Scripps Laboratories

Relationship among Absorbance, Transmittance & Extinction Value

_____%_Light_____ ___Transmittance_(T)___ ____Extinction____
Absorbed%Fraction1/TE=log 1/T
0 100 1.0 1 0.00
25 75 0.75 1.3 0.13
50 50 0.5 2 0.3
83 17 0.17 6 0.95
90 10 0.1 10 1.00
95 5 0.05 20 1.3
99 1 0.01 100 2.00
99.9 0.1 0.001 1000 3.00
100 0 0 - -

Technical Info

Spectroscopic Data