Internal Standard ASTM D-5307 Back Catalog number: 51124 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 15900-1057-100AN5 gamma-Cyhalothrin, 100µg/ml in Acetonitrile, 5ml Price on request 95620 552.2Mix Price on request DF-IS-G Mass-Labelled PCDF Internal Standard Solution, 1.2ml, nonane Price on request