EPA Method 624 Internal / Surrogate Standard Back Catalog number: 92559 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 71476A 4-Chlorothioanisole Price on request 15900-2160-100AN5 Fenbutatin oxide, 100µg/ml in Acetonitrile, 5ml Price on request 673832 Fluazuron, 100mg Price on request