1,4-Dichlorobutane, 2000µg/ml in MeOH, 1ml

2,3',4-Tribromodiphenyl ether, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 147217-77-4

1,3,6,8-Tetrachlorodibenzo-p-dioxin, 1.2ml x 50ug/ml, nonane

EPA Method 507 - Internal Standard