EPA Method 504.1 - 524.2 Analytes Back Catalog number: 96656 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 679981 Diflufenzopyr, 100mg Price on request 678153 Thionazin, 100 µg/ml, Acetonitrile, 1ml Price on request 679577 Picric acid, 100 µg/ml, Acetonitrile, 10ml Price on request