Heptachlor, 100 µg/ml, Acetonitrile, 1ml Back Catalog number: 678426 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 673709 Tolclofos-methyl, 10.0 µg/ml, Ethyl acetate, 10m Price on request 93905 Aliphatic Hydrocarbon Calibration #3 Price on request 675656 Sebuthylazine, 100 µg/ml, Acetonitrile, 5ml Price on request