d4 C29 alpha alpha alpha (20R)-Ethylcholestane, 100µg/mL in Isooctane, 1ml

Mass-Labelled PCB Internal/Recovery Standards, 1.2ml, nonane

Toxaphene Parlar-No. 62, 1µg/mL in Cyclohexane, 1ml

7-Aminobenz[a]anthracene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 2381-18-2