EPA Method 552.2 - Surrogate Standard Back Catalog number: 30108 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 679254 EGDN, 100 µg/ml, Acetonitrile, 1ml Price on request 54174 Ferrous Iron (Fe) Price on request 10754.11-10-W Iopanoic acid,10 µg/mL,water,1mL, Price on request