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

Ethanol standard in serum,0.8g/L,serum, 1.5mL

Syringaldehyde, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 134-96-3

EPA Method 500 Series Internal Standard