Selenium (Se) Back Catalog number: 59960 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2604.18-10UG 1,2,3,4-Tetrahydrochrysene, neat, Solvent-neat, Unit ca. 10µg , # of units-1, Cas.no. 2091-90-9 Price on request 31421 Toluene Price on request L20800000AL Fluorene, 10µg/ml in Acetonitrile, 10ml Price on request