A spectrophotometer for the direct determination of sample extinction by simultaneous measurement at multiple wavelengths and application of Allen's correction.
D003124:Colorimetry / Q000295:instrumentation*; D004967:Estrogens / Q000032:analysis; D008962:Models, Theoretical; D013053:Spectrophotometry / Q000295:instrumentation* / Q000379:methods
D004967:Estrogens