EPA Method 505/507 - Pesticide Standard Back Catalog number: 91936 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended C11064100 Cefazolin sodium salt, certified, 0.1g Price on request 678503 Spiromesifen, 100 µg/ml, Acetonitrile, 1ml Price on request 95273 Chlorinated Pesticides Price on request