EPA Method 624 Internal / Surrogate Standard Back Catalog number: 92559 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 675546 Chlorbufam, 10.0 µg/ml, Acetonitrile, 10ml Price on request MD5CWDS PCDD Window Defining Mixture for DB5/BP5/HP2/Rtx-5/SPB-5, 1.2mL, nonane Price on request 72556 Chloroform-d Price on request