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

3-Methyl-2-buten-1-thiol,100 µg/mL,MeOH,1mL,

Diphenyl isopropylphenyl phosphate, techn. isomer mixture,1000 µg/mL,isooctane,1mL,

Acetaldehyde-2,4-DNPH, 1000µg/ml in Acetonitrile, 5ml