Significant differences in relaxation correlation peaks were used to determine the completion of the reaction, confirmed by PXRD data. The T1-T2* measurement provides an easy, versatile, and solvent-free process especially useful for mechanochemical reactions and formulations, particularly with judicious choice of reaction vessel allowing for in-situ analysis as is described here. This new method may be applied to many real-life industrial processes and materials with proper adjustments, as already seen with shales and coals. In future work the T1-T2* analysis method may be further improved by utilising a Look