Heptachlor epoxide Back Catalog number: 96891 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 675625 Isoprothiolane, 100 µg/ml, Acetonitrile, 5ml Price on request 32003 EPA Method 500 Series Internal Std #4 Price on request 50177 Anion Mix #6 Price on request