Mass-Labelled PCB Solution , 1.2ml x 20ng/ml, nonane

2H,2H,3H,3H-Perfluoroundecanoic acid, 50µg/mL in MeOH, 1ml

Ethylene sulfide, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 420-12-2

p,p'-(13C12)Methoxychlor, 100µg/ml in Nonane, 1,2ml