EPA Method 604.1 Analytes Back Catalog number: 40004 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 680079 Amitriptyline hydrochloride, 100mg Price on request 673679 Propham, 10 µg/ml, Ethyl acetate, 10ml Price on request 9019.4-100-AN 1,4-Dinitrosopiperazine, 100µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 140-79-4 Price on request