Endosulfan-sulfate 10 µg/mL in Cyclohexane, 10ml

1-Nitronaphthalene-d7, 1000µg/ml in Toluene, 1ml

GC-IRMS Standards (C25 (?13C: -28.21); C30 (?13C: -28.60); C36 (?13C: -26.15)), 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-10, Cas.no.

2,3,3',4,5,5'-Hexachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane