EPA Method 508 Surrogate Standard Back Catalog number: 19042 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 675221 Quizalofop-p-tefuryl, 10 µg/ml, Acetonitrile, 10 Price on request 79241 EPA Method 8330 Analyte Price on request 72674 Triflumuron Price on request