EPA Method 8240A Calibration Check Compounds Back Catalog number: 82412 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 43017 Nitrobenzene-d5 Price on request 673281 Fenamiphos, 100 µg/ml, Acetonitrile, 5ml Price on request 92797 Pesticide Standard Price on request