EPA Method 508.1 & 525.2 Pesticide Standard Back Catalog number: 91970 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DD-2-S 2-Chlorodibenzo-p-dioxin, 1.2ml x 50ug/ml, nonane Price on request 681476 Hexazinone, 10.0 µg/ml, Acetonitrile, 10ml Price on request 674941 Benzyltrimethylammonium chloride, 100mg Price on request