EPA Method 1666Labeled Standard Back Catalog number: 82493 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 676838 Metronidazole-hydroxy, 10mg Price on request 676296 Isopyrazam, 10.0 µg/ml, Acetonitrile, 10ml Price on request H828602 Hydroxy Atrazine-d5, 1mg Price on request