EPA Method 531.1 - Analytes Mixture Back Catalog number: 33042 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 50152 Ammonia as N Price on request 678503 Spiromesifen, 100 µg/ml, Acetonitrile, 1ml Price on request 1356.6-100-DC Hexachlorobenzene, 100µg/mL, Solvent-dichloromethane, Unit 1mL, # of units-1, Cas.no. 118-74-1 Price on request