EPA Method 8250 Back Catalog number: 82522 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DD-123678-S 1,2,3,6,7,8-Hexachlorodibenzo-p-dioxin , 1.2ml x 50ug/ml, nonane Price on request 675930 Propachlor, 250mg Price on request M325898 5-Methyl-N-phenyl-2-1H-pyridone-d5(Pirfenidone-d5), 1mg Price on request