EPA Method 507 Surrogate Standard Back Catalog number: 19049 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 678054 Flufenacet ESA sodium salt, 100 µg/ml, Acetonitri Price on request 94946 Chlorinated Pesticide Mix #2 Price on request 79446 o-Chlorobenzylidenemalononitrile Price on request