EPA Method 642 - Analytes Back Catalog number: 40057 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 96728 alpha-Ketoglutaric acid Price on request 57349 Indium (In) Price on request 70383 Parathion ethyl, 1000µg/ml in MeOH, 1ml Price on request