Selenium (Se) Back Catalog number: 50478 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended ACQ-AQ40-115 Ethanol standard in water,4.0g/L,water, 1.5mL Price on request 3833.21-K-IO Monolinoylglycerol, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 2277-28-3 Price on request DF-2378-S 2,3,7,8-Tetrachlorodibenzofuran , 1.2ml x 50ug/ml, nonane Price on request