EPA Method 552,552.1,552.2 Internal Std Back Catalog number: 30105 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 30621 4-Nitroanisole Price on request 675251 Quinmerac, 100 µg/ml, Acetonitrile, 5ml Price on request 0304.17-200-T 1-Methylpyrene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 2381-21-7 Price on request