Selenium (Se) Back Catalog number: 57134 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 58273 Tantalum (Ta) Price on request 677065 D5-Metamitron, 100 µg/ml, Acetonitrile, 1ml Price on request 0253.34-10MG Isoviolanthrene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 4430-29-9 Price on request