Selenium (Se) Back Catalog number: 50478 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 31351 1,1,1,2-Tetrachloroethane, 2000µg/ml in MeOH, 1ml Price on request 1966.12-5MG 2,2',3,4,4'-Pentabromodiphenyl ether, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 182346-21-0 Price on request 9060.7-K-IP Tetrachloroguaiacol , 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 2539-17-5 Price on request