Heptachlor, 1000µg/ml in Hexane, 1ml Back Catalog number: 79022 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 96129 Triethylene glycol Price on request 96626 Methadone/Methaqualone/Propoxyphene Price on request 673350 Methamidophos, 10.0 µg/ml, Acetonitrile, 10ml Price on request