EPA Method 604.1 Analytes Back Catalog number: 40004 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8986.4-K-AN N-Nitrosopiperazine, 1000µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 5632-47-3 Price on request 94990 PCB Congeners Price on request F342000 Finasteride, 50mg Price on request