Heptachlor Back Catalog number: 79167 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 59053 Cal Std 2 - 10X Price on request 684223 N-Nitrosodiethylamine, 100 µg/ml, Methanol, 5ml Price on request 679375 Chlorpyrifos-methyl, 10.0 µg/ml, Cyclohexane, 10 Price on request