Arsenic (As)

2-Chloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene

2-Methyloctadecane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 1560-88-9

Dimethyltin dichloride, 1000 µg/ml, Methanol, 5m