Paraoxon-ethyl, 10 µg/ml, Cyclohexane, 10ml

alpha alpha alpha (20R,24RS)-24-Ethylcholestane (82% in mixture with alpha alpha alpha (20S,24RS)-24-Ethylcholestane), 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no.

D14-Methoxychlor, 10mg

PAH Mix-25, 2000ng/µl in Acetone/Benzene, 1ml