From a method description in a Russian document:
After the chromatographic analysis is complete, the column is flushed with at least 2-3 volumes of water at a rate of 0.4 ml/min. The column is then mothballed (?) by washing it with at least 10-15 volumes of 20% alcohol at a rate slowly declining from 0.4 ml/min to 0 ml/min.
The word I translated as "mothballed" is konservirovat (консервировать колонку) in Russian. It has the general meaning of "preparing something for storage" (for instance, "preparing vegetables for storage by pickling").
In an effort to determine the correct terminology, I would like to know the reason why a chromatography column would be washed with 20% ethanol. Any recommendation on the standard biochemical terminology for this procedure, if it exists, would also be welcome.