D5-Propachlor, 100 µg/ml, Acetonitrile, 1ml

4-Chlorotoluene, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 106-43-4

Mono-n-butyl phthalate (ring-1,2-13C2, dicarboxyl-13C2, 99%) 100 µg/mL in MTBE, 1,2ml

QC Standard 1