EPA Method 551.1 Internal Standard Back Catalog number: 32103 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended XA20565000AL Benzo[b]fluoranthene, 100µg/mL in Acetonitrile, 1ml Price on request 30125 2-Bromobutyric acid Price on request 2326.12-10-IOX10 Arochlor 5460 , 10µg/mL, Solvent-isooctane, Unit 1mL, # of units-10, Cas.no. 11126-42-4 Price on request