Routine Shimming Using TopShim
This is routine shimming and should be carried out at the beginning of every NMR session, and whenever the sample in the magnet is changed. Routine shimming involves making fine adjustments to the Z, Z2, Z3, Z4 and Z5 shims. Some higher field magnets may require higher order Z shims. The system administrator has programed TopShim to achieve the best homogeneity on each sample and it is fully automatically.
The core method of TopShim is gradient shimming. A quality criterion for the final line-shape ensures best results for all situations.
TopShim is using for all deuterated solvents the 2H gradient shimming method and for other solvents especially H2O, the 1H gradient shimming method.
- ▪
- Select the Shim button in the Workflow button bar by clicking on it. The shimming will start momentarily and should take less than a minute.