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

2,4,8,10-Tetraoxaspiro[5.5]undecane, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 126-54-6

PCB No. 118, 10µg/mL in Isooctane, 10ml

Pentachloroaniline, 10µg/mL in Cyclohexane, 10ml