Selenium (Se) Back Catalog number: 56134 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 71585 m-Cresol-PFB derivative Price on request P480008 Piperacillin Sodium, 1g Price on request 2912.20-100-MX Sodium p-n-tetradecylbenzenesulfonate, 100µg/mL, Solvent-methanol/water (50/50), Unit 1mL, # of units-1, Cas.no. 1797-33-7 Price on request