Heptachlor, 1000µg/ml in Hexane, 1ml Back Catalog number: 79022 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 72247 Riboflavin Price on request 68C-CVS EPA Method 1668C Calibration Kit (5x200ul + 500ul CS3), 6 ampoules, nonane Price on request 78013 Pentachlorophenol, 1000µg/ml in MTBE, 1ml Price on request