EPA Method 525 Internals & Surrogates

1,1-Dichloro-2,2-bis[4-chloro(13C6)phenyl]ethane, 1.2mL x 100ug/mL, nonane

2,2',3,4,4',5,5'-Heptachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane

Perinaphthenone, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 548-39-0