EPA Method 502.2 Surrogate Standard Back Catalog number: 91704 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 59207 L F B Solution Price on request 676951 Alachlor ESA sodium salt, 100µg/ml, Acetonitrile, 1ml Price on request PF5OHXA Perfluoro-5-oxahexanoic acid (PFMBA), 1.2ml x 50ug/ml, methanol Price on request