1-(4-Chlorophenyl)urea, 100 µg/ml, Acetonitrile,

Metobromuron, 100µg/mL in Acetonitrile, 1ml

Mass-Labelled PCDD/PCDF Internal Standard Solution, 1.2ml, nonane

11-Methylbenz[a]anthracene,50 µg/mL,toluene,1mL,