EPA Method 507 Surrogate Standard Back Catalog number: 19049 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 71097 Methamidophos, 1000µg/ml in MeOH, 1ml Price on request 677311 2,3,6-Trichlorophenol, 250mg Price on request CFN98716 Ellagic acid, >98%, 20mg Price on request