PCB No. 18, certified, 25mg

1,2,4,5,8,9-Hexachloroundecane, 100µg/ml in Isooctane, 1ml

Diphenylsulfide in isooctane, Blank Units: 5x1mL ampoules

2-Hydroxyibuprofen, 100 µg/ml, Acetonitrile, 1ml