Selenium (Se) Back Catalog number: 57134 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1548.17-K-IOX10 n-Heptadecane-d36, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-10, Cas.no. 39756-35-9 Price on request 679123 D8-Toluene, 2000 µg/ml, Methanol, 1ml Price on request 54239 Sulfide (S) Price on request