EPA Method 551.1 Internal Standard

1,8-Dimethylphenanthrene, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 7372-87-4

4,4'-Diphenyltetrathiafulvalene, 1000µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 5152-94-2

1,9-Dimethyl-5-ethylphenanthrene, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no.