Selenium (Se) Back Catalog number: 56034 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 672990 Medroxyprogesterone 17-acetate, 250mg Price on request 31401 1,1,2,2-Tetrachloroethane, 2000µg/ml in MeOH, 1ml Price on request 680899 Flazasulfuron, 100 µg/ml, Ethyl acetate, 1ml Price on request