525 Internal Standard Back Catalog number: 94212 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended C12377900 3,3´-Dichlorobenzidine, 100mg Price on request 55143 RCRA Perchlorate Price on request 683738 4-Bromofluorobenzene, 100 µg/ml, Acetonitrile, 5 Price on request