EPA Method 551.1 Performance Check Soln Back Catalog number: 30114 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1935.5-1ML N-Methylbis(trifluoroacetamide), neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 685-27-8 Price on request 34081 Ethyl methacrylate Price on request 96558 Desipramine Price on request