If the sample does not lock, please make sure that you followed the "NMR-basic-operation" procedure, in particular, make sure that you followed the procedure about sample preparation. Do you have ...

Please prepare your samples in the designated area or under a hood, and not on top of the magnet. The chemical shifts (d) of solvent signals observed for 1 H NMR and 13 C NMR spectra are listed in the ...

For an additional fee, you can have your NMR sample(s) prepared for you. In this case, please send samples in flat bottomed sample vials. When sending solids or neat liquids for analysis, please ...

For example, if you want to run the LCMS you must provide columns, sample vials, and mobile phase or if you want to run the NMR you must provide the NMR tubes and deuterated solvents. Most consumables ...