EPA Method 500 Series Internal Std #4

3,6-Dimethylphenanthrene, 100µg/ml in AL, 5ml

1,3-Diaminopyrene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 92821-64-2

1,2,3,6,7,8-Hexachlorodibenzo-p-dioxin ,50 µg/mL,n-nonane,1mL,