EPA Method 527 Surrogate Standard Back Catalog number: 95053 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 94476 Piperonyl butoxide Price on request 15900-2822-100AN5 Imazamox, 100µg/ml in Acetonitrile, 5ml Price on request 70430 1,4-Phenylenediamine Price on request