EPA Method 8021B Internal Standard Back Catalog number: 19394 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677609 2H,2H,3H,3H-Perfluorooctanoic acid, 10mg Price on request 90807 Ethyl acrylate Price on request 91874 EPA Method 8330Mix #1 Price on request