EPA Method 551.1 Internal Standard

γ-1,2,5,6,9,10-Hexabromo[13C12]cyclododecane, 1.2ml x 50ug/ml, toluene

2-Ethylpyrazine, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-, Cas.no. 13925-00-3

3,4,4-Trichlorobiphenyl (BZ-37)