CCME F1 Retention Time Marker

2,2',3',4,4',5,6'-Heptachloro-3-methoxybiphenyl, 1.2ml x 50ug/ml, nonane

d2 C27 alpha alpha alpha (20R)-Cholestane, 100µg/mL in Isooctane, 5 x 1ml

Etrimfos, 100 µg/ml, Toluene, 1ml