EPA Method 8240A Calibration Check Compounds Back Catalog number: 82412 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673588 Fenitrothion, 100 µg/ml, Ethyl acetate, 5ml Price on request 53070 Spiking Standard #2 Price on request 3706.10-80-05HC Gonyautoxin-1 and -4 Price on request