Heptachlor, 100 µg/ml, Acetonitrile, 1ml Back Catalog number: 678426 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended PCB-IS-B Mass-Labelled PCB Solution/Mixture , 1.2ml, nonane Price on request 71260 1,2-Dichlorotrifluoroethane Price on request 21006 Base/Neutrals Surrogate Standard Price on request