EPA Method 8260B Purgeable Internal Standard

n-Tricosane, ?13C: -26.71, 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 638-67-5

Fipronil sulfone, 1000µg/ml in Acetonitrile, 1ml

4-Nitrophenol, 10.0 µg/ml, Acetonitrile, 10ml