Below you will find a table that deals with the
miscibility of HPLC solvents. There are several "universal" HPLC solvents such as tetrahydrofuran and
acetonitrile, which are miscible with almost all others except hexane and
pentane. By far the most useful "rinsing, or cleanout" solvent is
iso-propanol, which is miscible with all others at all concentration
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