EPA Method 8121 Surrogate Standard Back Catalog number: 81204 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673263 Diniconazole, 100 µg/ml, Acetonitrile, 5ml Price on request 56229 Copper (Cu) Price on request D-404N 2,3,7,8-Tetrachlorodibenzo-p-dioxin, 1mg Price on request