2,7-Dichlorodibenzo-p-dioxin,50 µg/mL,n-nonane,1mL,

Sulfur Calibration Stock Solution Thiophene 1000 µg/mL in Toluene; unit: 5x1mL ampoules Please request for diluted samples in the range 1 to 1000 ng/mL.

Dibenzo[a,i]pyrene-d14, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 158776-07-9

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