EPA Method 8240A Internal Standard Back Catalog number: 22003 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 684512 Acephate, 10.0 µg/ml, Acetone, 10ml Price on request 15900-1939-10CY10 Endosulfan (techn.), 10µg/ml in Cyclohexane, 10ml Price on request Z273000 trans-Zeatin, 50mg Price on request