ICP-MS Internal Standard Back Catalog number: 50443 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 59592 Chemical Oxygen Demand Price on request 682692 4-n-Nonylphenol-mono-ethoxylate, 100 µg/ml, Aceto Price on request 70193 Heptachlor epoxide (isomer B), 1000µg/ml in MeOH, 1ml Price on request