Selenium (Se) Back Catalog number: 56034 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2039.12-50-NN Octachlorodibenzofuran,50 µg/mL,n-nonane,1mL, Price on request 70254 Prometryne, 1000µg/ml in MeOH, 1ml Price on request 59984 ICP-MS Calibration Standard Price on request