EPA Method 552.2 - Surrogate Standard Back Catalog number: 30108 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 63121 PCB No. 121, 1000μg/ml in Isooctane, 1ml Price on request M815000-5MG Muscimol, 5mg Price on request 18000-1465-100AN5 Ofloxacin, 100µg/ml in Acetonitrile, 5ml Price on request