EPA Method 552,552.1,552.2 Internal Std Back Catalog number: 30105 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 59295 Anions Mix Price on request 675081 Penoxsulam, 25mg Price on request 674747 Flufenacet, 100 µg/ml, Acetonitrile, 5ml Price on request