Heptachlor, 100 µg/ml, Acetonitrile, 1ml

2,4,5-T-methyl ester, 250mg

2,2',3,3',4,4',5,5',6-Nonachloro[13C12]biphenyl, 50.0µg/mL in Nonane/10% toluene, 1,2ml

GC-IRMS Standards (C15 (?13C: -30.22); C20 (?13C: -33.06); C25 (?13C: -28.21)), 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no.