EPA Method 502/524 Surrogate Standard #2 Back Catalog number: 19267 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 93313 GPC Window Calibration Stock Price on request 674640 Folpet, 250mg Price on request 676188 Halofenozide, 100 µg/ml, Acetonitrile, 5ml Price on request