EPA Method 508 Surrogate Standard Back Catalog number: 19042 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 51138 NWTPH-HCID - Surrogate Standard Price on request 680794 Fenoxanil, 10.0 µg/ml, Acetonitrile, 10ml Price on request 3510.12-100-AN Tetradifon, 100μg/mL in Acetonitrile, 1ml Price on request