Catechol

1,2,4-Trichlorodibenzo-p-dioxin, 50µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 39227-58-2

EPA 537 UCMR3 Calibration Mix 2

2,2',3,4,4',5,6'-Heptachloro-3'-methoxybiphenyl, 1.2ml x 50ug/ml, nonane