Heptachlor, 100 µg/ml, Acetonitrile, 1ml Back Catalog number: 678426 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 70412 1,4-Naphthoquinone Price on request 59020 ICP Interference Standard Mix 1 Price on request 91952 4-Bromo-3,5-dimethylphenyl-N-methylcarbamate Price on request