EPA Method 502.2 Internal Standard Back Catalog number: 91703 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8908.14-100-T 3-Methyl-2,2',4,4'-tetrachlorodiphenylmethane Price on request 79592 Tefluthrin Price on request 52326 Gun Shot Residue Price on request