EPA Method 552.1 - Surrogate Standard Back Catalog number: 31056 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 54223 Anion QC Mix Price on request SC-396749 2-hydroxy-3-methylpentanoic acid, >95%, 50mg Price on request 673598 Flonicamid, 100 µg/ml, Acetonitrile, 5ml Price on request