EPA Method 531.1 Individual Analytes Back Catalog number: 30041 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 679395 Ioxynil-octanoate, 100mg Price on request M338862 Metolachlor ESA-d6 Sodium Salt, 1mg Price on request 71575 4-Chloro-3-methylphenol-PFB derivative Price on request