EPA Method 8121 Internal Standard

n-Undecylbenzene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 6742-54-7

Pentachlorophenol, 100 µg/ml, Acetonitrile, 1ml

Wavelength Calibration Solution (3B)