Selenium (Se) Back Catalog number: 57234 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 71587 2,4,6-Tribromophenol-PFB derivative Price on request 97734 SVOC Standard Price on request 682375 Closantel, 100 µg/ml, Acetonitrile, 1ml Price on request