Internal Standard Solution, 1.2ml, toluene

Heptachlor endo-epoxide, 10.0 µg/ml, Cyclohexane,

Methyl-n-propylsulfide, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 3877-15-4

Cyclopentane, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 287-92-3