EPA Method 548.1 Internal Standard

2,3,3',5,6-Pentachlorobiphenyl, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 74472-36-9

Aroclor 1242

Diisobutyl phthalate-3,4,5,6-d4,1000 µg/mL,isooctane,1mL,