EPA Method 502.2 Internal Standard Back Catalog number: 91703 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 15900-4655-10AN10 Terbufos-sulfoxide, 10µg/ml in Acetonitrile, 10ml Price on request 73188 Pentachloroaniline Price on request 0763.16-500-IO 1,8-Dimethylphenanthrene, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 7372-87-4 Price on request