EPA Method 601 - Purgeables Mix #4 Back Catalog number: 40003 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 682619 Dibutyl fumarate, 1000mg Price on request 34591 1,3-Diisopropylbenzene Price on request 678498 Quinalphos, 100 µg/ml, Acetonitrile, 1ml Price on request