We are trying to get an older SPS up and running, and one main cost is the price of new desiccant columns. The current ones have probably run their course (it has two column per solvent, so we are considering replacing only the terminal column). Has anyone tried to open one of these things up and dry the desiccant in a vacuum oven to try and recycle it?
Paul M. Zelisko
We used to flush the columns with compressed air or nitrogen to flush out all of the residual solvent. Once all of the solvent was out (very important!) we used a very large mantle that wrapped around column and dried the column in a fume hood for 24-48 hours depending on how wet they were.
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