EPA Method 525 Internals & Surrogates Back Catalog number: 91161 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2206.14-K-IO 2-Nitrophenanthrene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 17024-18-9 Price on request 674567 Fenitrothion-oxon, 10mg Price on request 684319 D3-Propoxur, 100µg/ml in Acetonitrile, 1ml Price on request