EPA Method 8020 Analytes Back Catalog number: 92152 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 675583 Thiofanox-sulfoxide, 10.0 µg/ml, Acetonitrile, 1 Price on request 677149 Bifenazate-diazene, 25mg Price on request 672998 17a-Ethinylestradiol, 250mg Price on request