EPA Method 515.2Methyl Derivatives Back Catalog number: 30074 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677669 N,N'-Diphenyl-1,4-phenylenediamine, 250mg Price on request X9221 p-Xylene Price on request 673935 Fipronil-sulfone, 50mg Price on request