S421, 100 µg/ml, Ethyl acetate, 5ml Back Catalog number: 673696 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended DF-IS-F40 Mass-Labelled PCDF Internal Standard Solution, 1.2ml, nonane Price on request 675633 Metosulam, 10.0 µg/ml, Acetonitrile, 10ml Price on request 2538.14-K-ME Naproxen Price on request