EPA Method 552.1 - Surrogate Standard Back Catalog number: 31056 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DD-0-S Dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene Price on request 679727 Phorate-sulfoxide, 100 µg/ml, Acetone, 1ml Price on request 58279 Gold (Au) Price on request