EPA Method 507 Analyte Mix #8 Back Catalog number: 94131 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 676340 Tecnazene, 10.0 µg/ml, Cyclohexane, 10ml Price on request 684510 D5-Ethofumesate, 100 µg/ml, Acetonitrile, 1ml Price on request 683853 Sulfosulfuron, 100 µg/ml, Acetonitrile, 5ml Price on request