Combined Window Defining/TCDD Resolution Mix, 1.2ml, nonane

5-Chloro-2-(2,4-dichloro[13C6]phenoxy)[13C6]phenol, 1.2ml x 50ug/ml, methanol

Aqueous Ethanol Standard (0.3g/l), 10 x 1,2ml

4-Nitrophenol, 10.0 µg/ml, Acetonitrile, 10ml