Heptachlor, 100 µg/ml, Ethyl acetate, 1ml Back Catalog number: 676691 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 30023 EPA Method 515.1 Internal Standard Price on request 9054.6-K-IP 4,5-Dichlorocatechol, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 3428-24-8 Price on request 73176 Methanesulfonic acid Price on request