2,2'-Dihydroxy-4-methoxybenzophenone, 250mg

EPA Method 548.1 Analyte

2,3,7,8-Tetrachloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene

2,6-Dimethylnaphthalene, 50 µg/mL in Toluene, 1ml