EPA Method 502/524 Surrogate Standard #1 Back Catalog number: 30070 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1633.11-25MG Cimetidine carboxamide dihydrochloride (free base), neat, Solvent-neat, Unit 25mg, # of units-1, Cas.no. 110592-19-3 Price on request 73343 trans-Aconitic acid Price on request 9755.17-10MG iso-Butyl n-pentyl phthalate, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. Price on request