Metronidazole,1000 µg/mL,MeOH,1mL,

(24S)-24-Ethyl-3,5-cyclocholest-22-ene, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no.

Esfenvalerate, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 66230-04-4

Mass-Labelled PCDD Internal Standard Solution, 1.2ml x 200ng/ml , nonane