Omethoate, 100 µg/ml, Acetonitrile, 5ml

C28 Triaromatic sterane, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 80382-33-8

Tramadol-13C,d3 HCl, 100µg/ml in MeOH, 1ml

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