Tolpyralate, 100 µg/ml, Acetonitrile, 1ml

2,4-D, 100µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 94-75-7

Mass-Labelled PCDF Solution/Mixture, 1.2ml, nonane

Silica (SiO2)