EPA Method 502/524 Surrogate Standard #2 Back Catalog number: 19267 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended C175398 Cannflavin A, 1mg Price on request E889800 Ethambutol Dihydrochloride, 50mg Price on request 673934 Fipronil, 10.0 µg/ml, Acetonitrile, 10ml Price on request