EPA Method 8240A Calibration Check Compounds Back Catalog number: 82412 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 92787 EPA Method 8081A Pesticide Standard A Price on request 53056 Mixed Calibration Standard 4 Price on request 675558 Dimefuron, 100 µg/ml, Acetonitrile, 5ml Price on request