Heptachlor, 100 µg/ml, Methanol, 1ml Back Catalog number: 679447 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 43002 EPA Method 8240 Purgeable Halocarbons Price on request 675390 Propazine, 100 µg/ml, Acetonitrile, 5ml Price on request 2508.6-K-IP 2,4,5-Tribromophenol, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 14401-61-7 Price on request