Fenthion-sulfoxide, 100 µg/ml, Acetonitrile, 5ml

4-Ethyl-6-methyldibenzothiophene, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 132034-90-3

9-Nitroanthracene-d9, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-5, Cas.no. 220381-38-4

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