SmartPrep® SPE Cartridge System Removing Residual Water from SPE Packings

When using solid-phase extraction (SPE) to process aqueous samples, one major requirement, or desire, is the ability to effectively remove all residual water from the SPE packing material after the water sample has been processed. The most effective method for this is to use nitrogen gas purge. This application note reviews the effectiveness of a nitrogen purge procedure, such that an end user can decide for themselves, the nitrogen purge time that might be adequate for their own specific method(s).