Merck provides a wide range of high-quality products for a variety of inorganic and organic spectroscopic applications. We offer high-purity acids (Suprapur® and Ultrapur®), auxiliaries (modifiers, Suprapur® salts, hydrides) for sample preparation (AAS and ICP) and CertiPUR® ICP standards, that are the worldwide only standards that gives you reliable measuring results for the calibration in atomic spectroscopy. Spectrophotometric analysis e.g. UV spectroscopy requires the use of highly purified solvents and reference materials for instrument qualification. For such applications, we offer you Uvasol® solvents that are comprehensively and stringently tested as well as CertiPUR® UV/VIS standards. We also provide deuterated solvents that are required for the NMR spectroscopy.