2,2',3,4,4',5-Hexachlorobiphenyl (137)

Arochlor 1232, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 11141-16-5

Fenthion-oxon-sulfoxide, 10.0 µg/ml, Acetonitrile

4-Hydroxybenzoic acid, 1000µg/mL in MeOH, 1ml