An application where the screening method has proven to be valuable is for the characterization of newly synthesized analytical standards. For example, a standard of an active ingredient was synthesized in-house for use in regulatory studies. As part of the characterization of the analytical standard that was performed prior to use, the standard material was screened by the solvent screening method since a validated residual solvent method was not available to determine whether any process solvents were still present. It was discovered that the standard contained more than 0.6 wt % ethyl acetate, which was used in the final crystallization step of the synthesis. This amount was much higher than anticipated and was not acceptable for an analytical standard, as it could cause the purity of the standard to change as the residual ethyl acetate evaporated from the standard over time. A change was made to the process in which the drying time was extended and the residual ethyl acetate was monitored until the amount was reduced to an acceptable level. Ultimately, the residual ethyl acetate was reduced to less than 0.1 wt % in the standard. This ensured that the purity of the standard remained consistent over time and that any data generated using this standard were reliable and consistent.