Selenium (Se) Back Catalog number: 57834 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 682369 Tolpyralate, 100 µg/ml, Acetonitrile, 1ml Price on request 66211 Group 1a PCB’s - Aroclor Toxicity Price on request 682067 2,6-Dichloroaniline, 100 µg/ml, Methanol, 5ml Price on request