EPA Method 507 Surrogate Standard Back Catalog number: 19049 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 90126 Aroclor 1242 Price on request 684319 D3-Propoxur, 100µg/ml in Acetonitrile, 1ml Price on request 96945 PT Semi-Vol Supplemental B/N Mix Price on request