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

2-Ethyl-5-methyl- and 2-ethyl-6-methylpyrazine, Isomer mixture, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-, Cas.no.

4-Chlorobenzophenone, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 134-85-0

D2887 Calibration Solutions, in chloroform, 1ml