EPA Method 8260B Internal Standard Back Catalog number: 22213 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 66097 2,2',3',4,5-Pentachlorobiphenyl (97) Price on request 53139 EPA 1620 Standard 1 Price on request 15900-3850-100AN5 Phenmedipham, 100µg/ml in Acetonitrile, 5ml Price on request