Heptachlor, 1000µg/ml in Hexane, 1ml Back Catalog number: 79022 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 678496 Pyrifenox, 100 µg/ml, Acetonitrile, 1ml Price on request 30100 EPA Method 551.1 - Analytes Mix “A” Price on request 12092.7-K-IO Benzal chloride,1000 µg/mL,isooctane,1mL, Price on request