Selenium (Se) Back Catalog number: 56134 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 59502 Multi-Element Internal Standard Price on request 1687.16-1G 4-tert-Butyl-2-phenylphenol, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 577-92-4 Price on request L20930000AL Pyrene, 10µg/ml in Acetonitrile, 10ml Price on request