EPA Method 8260B Internal Standard Back Catalog number: 22213 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673542 Diazinon, 100 µg/ml, Ethyl acetate, 5ml Price on request 79493 Perfluoroheptanoic acid Price on request 683797 Nivalenol monohydrate, 100 µg/ml, Acetonitrile, Price on request