KU NMR Core Lab: Sample Submission Procedures
The KU NMR Core Lab provides high-field nuclear magnetic resonance spectroscopy services to support cutting-edge research in chemistry, biochemistry, and materials science. To ensure the highest quality data and operational efficiency, all users must follow a standardized sample submission process. This document outlines the general requirements and expectations for submitting samples to the facility.
The Importance of the Submission Form
The Sample Submission Form serves as the formal link between the researcher and the NMR staff. It ensures that the facility has critical information regarding the chemical nature of your sample, the requested experimental parameters, and appropriate safety precautions. Without a completed and accurate submission form, staff cannot process samples efficiently, which may lead to delays in data acquisition.
- PI and Researcher Details: Contact information for billing and data retrieval.
- Sample Identification: Proper labeling to match the physical vial.
- Solvent Selection: Precise identification of the deuterated solvent used.
- Chemical Hazards: A declaration of any toxicity, air-sensitivity, or hygroscopic nature of the material.
- Experiment Type: Specification of standard 1D (1H, 13C) or advanced 2D experiments (COSY, HSQC, HMBC).
Preparing Your Samples
Success in NMR spectroscopy begins at the bench. Before submitting your form, ensure your sample meets the following criteria:
- Sample Purity: Remove solid particulates using a syringe filter. Impurities can cause significant broadening of resonance peaks.
- Concentration: Ensure the sample concentration is optimized. Too little material leads to poor signal-to-noise ratios, while excessive concentration can cause line broadening due to viscosity or solubility issues.
- Volume: Fill the NMR tube to the appropriate height specified by the facility guidelines (typically 500-600 L for standard 5mm tubes).
- Labeling: Use a permanent marker to label the cap or the tube itself clearly. Ensure the ID on the tube matches the ID on the submission form exactly.
Safety and Hazardous Materials
Safety is the top priority in the KU NMR Core Lab. Users must accurately report if samples are radioactive, biohazardous, or highly toxic. If a sample is air-sensitive, it must be submitted in sealed, flame-sealed, or specialized Youngs tubes. Failure to disclose hazardous properties can result in the loss of laboratory privileges and may pose a danger to staff and equipment.
Data Retrieval and Reporting
Once samples are processed, data will be made available through the secure laboratory network. Researchers are responsible for downloading their files in a timely manner. The NMR core does not serve as a permanent storage facility for experimental data; therefore, regular backups are highly recommended.
Policy on Queueing and Turnaround Time
Sample submission forms are processed in the order they are received, though priority may be given to specific projects based on facility agreements or urgent instrument requirements. If you have an exceptionally large batch of samples, please consult with the lab manager in advance to determine the best timeline for submission.
Conclusion
By adhering to these submission guidelines, you help the KU NMR Core Lab maintain a safe, productive, and reliable research environment. Always double-check your submission form for accuracy and ensure your samples are prepared to the highest standard before leaving them at the drop-off station.
