2?-Methyl-18?(H)-Oleanane,neat,neat,Ca. 5 µg,

2,7-Dichloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene

9-Nitrophenanthrene-d9, 10µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no.

Bentazone, 10.0 µg/ml, Acetonitrile, 10ml