Chlorfenvinphos, 10 ng/µl, 10ml

1,1,1-Trichloro-2-[2-chloro(13C6)phenyl]-2-[4-chloro(13C6)phenyl]ethane, 1.2mL x 100ug/mL, nonane

4,4’-DDE

Valeraldehyde-DNPH