Selenium (Se) Back Catalog number: 50478 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 93244 EPA Method 526 Analytes Price on request 9462.37-K-IO Tri(butylcresyl)butane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 1843-03-4 Price on request 8646.12-50-NN 1,2,3,4,7-Pentachlordibenzo-p-dioxin,50 µg/mL,n-nonane,1mL, Price on request