2,5-Dichlorotoluene

D4-Salicylic acid, 100 µg/ml, Acetonitrile, 1ml

2,2-Bis(4-hydroxy-13C6-phenyl)propane, 1.2ml x 50ug/ml, methanol

PCB 118, 100 µg/ml, Isooctane, 1ml