EPA Method 624 Surrogate Standard Back Catalog number: 19112 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 678489 Propachlor, 100 µg/ml, Acetonitrile, 1ml Price on request 682911 Allethrin, 100 µg/ml, Acetonitrile, 5ml Price on request 10019R CLP Semi-Volatile Internal Standard Price on request