PCB elution window standard

3-Fluoro-2,3',4',5-tetrachlorobiphenyl, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no.

Benzoylecgonine tetrahydrate,1000 µg base/mL,MeOH,1mL,

1,2,3,4-Tetramethylbenzene