EPA Method 8270 Additionals Back Catalog number: 94422 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 82478 Condensation Surrogates - Method 8261 Price on request 2087.6-100MG 4-Nitrophenol, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 100-02-7 Price on request 50287 Nitrite (NO2-) as N Price on request