Selenium (Se) Back Catalog number: 57834 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended TCS 5-Chloro-2-(2,4-dichlorophenoxy)phenol, 1.2ml x 50ug/ml, nonane Price on request 8112.17 3-n-Pentylcarbazole, Please inquire, Solvent-, Unit , # of units-, Cas.no. Price on request 93624 MA - VPH Matrix Spike #2 Rev 1.1 Price on request