EPA Method 552.2 - Surrogate Standard Back Catalog number: 30109 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 95036 n-Hydrocarbon Standard - EPH Price on request 71813 1,3-Phenylenediamine, 1000µg/mL in methylene chloride, 1ml Price on request 71773A 3,4-Dinitrotoluene Price on request