| Alternative title | qNMR-CD : Matériau de référence certifié d’une solution d’étalonnage de la caféine pour utilisation en RMNq |
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| DOI | Resolve DOI: https://doi.org/10.4224/crm.2026.qnmr-cd.20250918 |
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| Author | Search for: Garrido, Bruno1ORCID identifier: https://orcid.org/0000-0001-5068-9879; Search for: McAulay, Callie J1; Search for: Giddings, Sabrina D1ORCID identifier: https://orcid.org/0000-0003-1644-2121; Search for: Thomas, Krista M1ORCID identifier: https://orcid.org/0000-0002-4850-5863; Search for: McCarron, Pearse1ORCID identifier: https://orcid.org/0000-0002-7746-8432 |
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| Affiliation | - National Research Council Canada
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| Format | 3D, Material |
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| Material type | Calibration solution |
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| Subject | Canadian reference material; qNMR-CD; qNMR; quantitative nuclear magnetic resonance; caffeine; deuterium oxide |
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| Abstract | Quantitative nuclear magnetic resonance (qNMR) is a powerful analytical method that provides accurate results with full traceability to the International System of Units (SI) when appropriate calibration is performed. CRM-qNMR-CD is a certified reference material (CRM) calibration solution of caffeine in deuterium oxide (D₂O) that is provided in a sealed 5 mm NMR tube. CRM-qNMR-CD is intended for direct use as an external calibration standard in qNMR experiments. |
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| Analytes | | Analyte | Quantity | Value | Expanded uncertainty | Unit | Type |
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| caffeine | mass fraction | 1.766 | 0.008 | mg/g | certified | | caffeine | mass concentration (15-30 °C) | 1.951 | 0.010 | mg/mL | certified | | caffeine | concentration (15-30 °C) | 10.05 | 0.05 | mmol/L | certified |
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| Period of validity | - Valid from 2026-05-01
- 5 years from date of sale
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| Publication date | 2026-05-01 |
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| Publisher | National Research Council Canada |
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| Copyright statement | - © 2026 National Research Council Canada
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| References | View items (4)- Burton, Ian W., Michael A. Quilliam, and John A. Walter. ‘Quantitative 1H NMR with External Standards: Use in Preparation of Calibration Solutions for Algal Toxins and Other Natural Products’. Analytical Chemistry 77, no. 10 (26 March 2005): 3123–31. https://doi.org/10.1021/ac048385h.
- Westwood, Steven, Taichi Yamazaki, Ting Huang, et al. ‘Development and Validation of a Suite of Standards for the Purity Assignment of Organic Compounds by Quantitative NMR Spectroscopy.’ Metrologia 56, no. 6 (2019): 64001. https://doi.org/10.1088/1681-7575/ab45cb.
- Wollinger, Wagner, Jane Luiza Nogueira Fernandes, Eliane Cristina Pires do Rego, Francisco Radler de Aquino Neto, and Bruno Carius Garrido. ‘Independent Certification of a Suite of qNMR Internal Standards: Ensuring Metrological Traceability in a Wide Range of Applications.’ Analytical and Bioanalytical Chemistry 417, no. 12 (2024): 2473–87. https://doi.org/10.1007/s00216-024-05671-5.
- ‘Evaluation of Measurement Data — Guide to the Expression of Uncertainty in Measurement’, 2008. https://doi.org/10.59161/jcgm100-2008e.
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| Export citation | Export as RIS |
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| Collection | Canadian Reference Materials and Methods |
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| Record identifier | 815e28c6-1f4d-44e1-8569-4d8c3d3fec56 |
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| Record created | 2026-05-22 |
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| Record modified | 2026-05-22 |
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