[13C12]Dibenzofuran, 1.2ml x 50ug/ml, toluene

1,2,3,4,6,7-Hexachloronaphthalene, 50µg/ml in nonane, 1,2ml

1,3,7,8-Tetrachloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene

Thiophene/2-Methylthiophene (2:1) in isooctane/Toluene(3:1); Units: 5x1mL ampoules, 1x10mL screw-capped bottle Chiron No. Concentration µgS/g (ppm) Wt.% S-4056-0 Blank 0 S-4056-5 5