2,5-Dimethylbenzaldehyde-DNPH, 100µg/ml in AcN, 1ml

Gas Internal/Surrogate Standard

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

2-Nitrophenol, 1000µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 88-75-5