D8-4,4'-DDE, 100 µg/ml, Acetone, 1ml

n-Dodecane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 112-40-3

Isoniazid, neat, Solvent-neat, Unit 250mg, # of units-1, Cas.no. 54-85-3

COD Calibration Standard