EPA Method 552.1 - Surrogate Standard Back Catalog number: 31056 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673252 Desmedipham, 10.0 µg/ml, Acetonitrile, 10ml Price on request 71400 (+/-)-Camphor Price on request 678296 1-Chloro-2-nitrobenzene, 250mg Price on request