Fenthion-oxon-sulfoxide, 10.0 µg/ml, Acetonitrile

Trioctyl trimellitate, 1000μg/ml in methylene chloride, 1ml

3,6-Dimethylphenanthrene, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 1576-67-6

Nitrate (NO3-) as N