Heptachlor epoxide Back Catalog number: 79168 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended M326031 6β-Μethyl Prednisolone 21-Acetate (>90%), 2,5mg Price on request 97051 Formaldehyde Price on request EPA-537IS EPA Method 537 Internal Standard Primary Dilution Standard (IS PDS), 1.2ml, methanol Price on request