Selenium (Se) Back Catalog number: 58134 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 59935 ICP-MS Verification Standard #2 Price on request 50708 pH 12.45 Standard @ 25°C Price on request 11809.12-50-NN 2,3,7,8-Tetrachlorodibenzofuran,50 µg/mL,n-nonane,1mL, Price on request