EPA Method 507 Nitrogen Phosphorus Pesticide Back Catalog number: 31882 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 59331 Metals Standard #2 Price on request 2949.6-100-IO gamma-1,2,3,4,5,6-Hexachlorocyclohexane-d6, 100µg/ml in Isooctane, 1ml Price on request 683172 Bentazone-8-hydroxy, 10.0 µg/ml, Acetonitrile, 5 Price on request