EPA Method 8141 Standard Rev 1 Back Catalog number: 98131 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 51197 Hydrocarbon Window Defining Mix Price on request 676730 4,4'-Diamino-3,3'-dimethyldiphenylmethane, 100mg Price on request 673367 Fenthion-sulfoxide, 100 µg/ml, Acetonitrile, 5ml Price on request