EPA Method 531.1 Individual Analytes Back Catalog number: 30041 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 676371 Heptadecafluorononanoic acid, 100mg Price on request 1719.15-500-IO 4-Methylphenanthrene, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 832-64-4 Price on request 3390.9-100-CY Endosulfan alcohol Price on request