EPA Method 1664 - Oil & Grease (Sonicate)

2,3,4,5-Tetrachlorobiphenyl ,100 µg/mL,isooctane,1mL,

Dibenzothiophene-d8, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 33262-29-2

1,3-Dimethyl-2-ethylbenzene, 1000µg/mL, Solvent-hexane, Unit 1mL, # of units-1, Cas.no. 2870-04-4