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

Mass-Labelled PCB Solution , 1.2ml x 20ng/ml, nonane

Sodium Methyl Sulfate, >98%, 25g

4-Ethylbenzoic acid, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 619-64-7