Selenium (Se) Back Catalog number: 50478 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended C12723300 4-Dimethylaminopyridine, 100mg Price on request 59613 IC Anions Cal Std - COA Level 5 Price on request 1450.15-K-IO 4-n-Nonylphenol, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 104-40-5 Price on request