EPA Method 552.1 - Surrogate Standard Back Catalog number: 31056 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 10285.24-10MG Zuclopenthixol acetate (cis+trans) Price on request 679880 Benzidine, 100 µg/ml, Acetonitrile, 1ml Price on request 79638 Cholesterol Price on request