PCB No. 14, 100µg/ml in Isooctane, 1ml

2,2',4,4',6-Pentabromo-6'-hydroxy[13C12]diphenyl ether, 1.2ml x 50ug/ml, toluene

N-Nitrosodiethanolamine, 100 µg/ml, Methanol, 5m

2-Imidazolidone, 250mg