EPA Method 633.1 Analytes Back Catalog number: 40049 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 16238 Chlordane Price on request 52004 Magnesium Nitrate Modifier Price on request 678104 Prothiofos, 100 µg/ml, Acetonitrile, 1ml Price on request