EPA Method 507 Pesticide Standard Back Catalog number: 91974 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 72208 L-Methionine Price on request XA20950902CY PAH-Mix 9 deuterated, 100µg/mL in Cyclohexane, 1ml Price on request 676758 Azimsulfuron, 100 µg/ml, Acetonitrile, 1ml Price on request