Mass-Labelled PCDF Internal Standard Solution, 1.2ml, nonane

Perfluoro-3,7-dimethyloctanoic acid, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 172155-07-6

V, 1000 µg/mL in 2% HNO3, 100ml

Isopropylcyclohexane, 1000µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 696-29-7