Methamidophos, 100 µg/ml, Acetonitrile, 5ml

EPA Method 610 PAH Mix, in MeCH:MeOH, 1ml

1,2,3,4-Tetramethylanthracene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 66553-01-3

Antipyrine, 250mg