EPA Method 508 Surrogate Standard Back Catalog number: 19042 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 676267 Fenthion-oxon-sulfone, 100 µg/ml, Acetonitrile, Price on request 40013 EPA Method 609 - Analytes Price on request 71411 2,3-Dibromopropionic acid Price on request