EPA Method 505/507 - Pesticide Standard Back Catalog number: 91936 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673366 Fenthion-sulfoxide, 10.0 µg/ml, Acetonitrile, 10 Price on request 10637.12-50-NN 1,2,3,4,7,8,9-Heptachlorodibenzofuran,50 µg/mL,n-nonane,1mL Price on request D435938-500MG 2,2-Dichloroacetamide, 500mg Price on request