TraceCERT® certified reference materials (CRM) are developed and produced in an accredited laboratory, fulfilling both ISO 17025 (General Requirements for the Competence of Testing and Calibration Laboratories) and ISO Guide 34 (General Requirements for the Competence of Reference Material Producers). By the use of quantitative NMR as a relative primary method, traceability can be achieved between different organic compounds since the NMR signal intensity is in direct relation to the numbers of protons that contribute to the signal. The organic TraceCERT products are all directly traceable to NIST material.
TraceCERT Product Features
Certified Standards for Chromatography
Certified Standards for quantitative NMR
Useful Literature
Organic TraceCERT® products are characterized by:
- Certified Content by quantitative NMR (qNMR)
- Superior level of accuracy, calculated uncertainties and lot-specific values
- Traceability to NIST
- Comprehensive documentation delivered with the product
(certification according to ISO Guide 31)
Certified Standards for Chromatography
The organic TraceCERT products for chromatographical methods comprise many products for environmental, food and beverage as well as for clinical analysis. The products are delivered together with a comprehensive certificate. You can download an example certificate (Caffeine 56396) here. The product offering of certified organic neat is continuously expanded, please visit our online product catalog for an up to date product list.
Certified Standards for quantitative NMR
We offer a set of NIST traceable certified reference materials for use as internal standards in quantitative NMR studies. The product table below indicates the chemical shifts (in ppm) and solvent compatibility for each of the available standards. An example certificate for a qNMR standard (1,2,4,5-Tetrachloro-3-nitrobenzene 40384) can be downloaded here.
| Cat. No. |
Substance |
Chemical Shifts* |
Solubility
|
Pack Size |
| D2O |
MeOD |
CDCI3 |
DMSO-d6 |
| 06856 |
Duroquinone |
2 ppm |
|
|
• |
|
1g |
| 74658 |
1,2,4,5-Tetramethylbenzene |
2.3 + 7.0 ppm |
|
|
• |
|
1g |
| 41867 |
Dimethylsulphone |
3.2 ppm |
• |
|
• |
• |
1g |
| 92816 |
Maleic acid |
6.2 ppm |
• |
• |
|
• |
1g |
| 06185 |
Benzoic acid |
8.2 - 7.4 ppm |
|
• |
|
• |
1g |
| 14659 |
Potassium phthalate monobasic |
~ 7 - 8 ppm |
• |
• |
|
|
1g |
| 03826 |
Calcium formate |
~ 7.5 - 8.5 ppm |
• |
|
|
|
1g |
| 40384 |
1,2,4,5-Tetrachloro-3-nitrobenzene |
7.8 - 8.4 ppm |
|
|
• |
• |
1g |
| 15639 |
3,5,-Dinitrobenzoic acid |
9.2 ppm |
|
|
|
• |
1g |
| 89151 |
Dimethylmalonic acid |
1.3 – 1.4 ppm |
• |
• |
|
• |
1g |
| 07038 |
Dimethyl terephthalate |
8.1+3.9 ppm |
|
• |
• |
• |
1g |
| *chemical shifts may slightly vary depending on the experimental conditions |
Useful literature
- Certified reference material for qNMR (Analytix 02/2010), PDF 161 KB
- A new generation of organic CRM (Analytix 03/2010), PDF 187 KB
- Certification process using qNMR (Poster Analytica 2010), PDF 119 KB
