15N3-Atrazine, 100 µg/ml, Acetonitrile, 1ml

4,4'-Dihydroxydiphenylmethane, 1.2ml x 50ug/ml, methanol

4-n-Octylphenol-di-ethoxylate, 1 µg/ml, Acetone,

2-Nitrofluorene-d9, 1000µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 128008-87-7