EPA Method 524 & 624 - Internal Standard

5'-Fluoro-2,3,3',4,4',5,6-heptachlorobiphenyl, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no.

4,4-Pentamethylene-2-pyrrolidone, >98%, 5g

Naphtho[2,1-a]pyrene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no.