EPA Method 552,552.1,552.2 Internal Std

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

Methyl-2,3,4,5-tetrabromobenzoate, 1.2ml x 50ug/ml, toluene

4-Chlorobiphenyl (3)