Selenium (Se) Back Catalog number: 57834 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended C12965400 Direct Red 28, certified, 0.1g Price on request 1579.4-K-ME Metformin hydrochloride, 1000µg base/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 1115-70-4 Price on request 676790 o-Toluidine, 100 µg/ml, Cyclohexane, 1ml Price on request