EPA Method 8240A Calibration Check Compounds Back Catalog number: 82412 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 674082 Anthraquinone, 250mg Price on request ACQ-SE01-030 Ethanol standard in serum,0.1g/L,serum, 3mL Price on request 676790 o-Toluidine, 100 µg/ml, Cyclohexane, 1ml Price on request