EPA Method 8240A Sys Perf Check Cmpds Back Catalog number: 82411 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 52023 CRI Mix 2 Price on request E888000 17ß-Estradiol, 50mg Price on request DF-2346-S 2,3,4,6-Tetrachlorodibenzofuran, 1.2ml x 50ug/ml, nonane Price on request