EPA Method 504.1 Analytes Back Catalog number: 30096 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 10448.12-K-IO 4,4'-Diaminobiphenyl-d8 (Rings-d8) Price on request 94604 PCB Congeners Price on request 11903.6-K-ME Metronidazole,1000 µg/mL,MeOH,1mL, Price on request