Selenium (Se) Back Catalog number: 57134 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 94197 Acids Standard Price on request 682098 Bithionol, 250mg Price on request 3150.24-K-IO Tetracosanoic acid (Lignoceric), 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 557-59-5 Price on request