Hexavalent Chromium (Cr+6), 10mg/mL in H2O, 500ml

D3-Ofloxacin, 100 µg/ml, Acetonitrile, 1ml

Perfluoroctanonic acid, sodium salt, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 335-95-5

oxy-Chlordane, 10.0 µg/ml, Cyclohexane, 10ml