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For comparison between NMR spectra, a reference material, known as a standard, can be added with a known, fixed chemical shift value. While modern techniques can now infer this reference from the residual signal of the solvent, sometimes this is not practical. Using mixed solvent systems, with variable residual signals, or studying large, complicated analytes can produce inconsistent results and an added standard is preferred. TMS (tetra-methyl silane) is commonly used as a zero point on the spectrum. NMR samples are dissolved in a deuterated solvent to prevent the protons present in the solvent chosen from overwhelming the analyte information. It is important to use a solvent which can fully dissolve the sample and does not produce overlapping peaks with the analyte. We offer a wide range of deuterated solvents for both organic and aqueous samples, with options that also contain a chemical shift standard. In addition, we sell standalone chemical shift standards and a selection of NMR tubes to fit your sample and analysis specifications.