Using oxygen absorbers/scavengers to remove the need for nitrogen storage of sensitive parts

Hi SMTnet. I have a series of sensitive parts and solder preforms which degrade when exposed to oxygen and moisture. It seems the standard way of protecting these components is to use a nitrogen purged cabinet as storage.

This seems to use a lot of nitrogen as there is normally a constant flow of nitrogen through this enclosure. If it has an oxygen sensor inside to regulate the flow then it becomes a rather expensive piece of equipment. Does anyone know of the normal equipment that I would need to nitrogen purge and seal ESD bags with components within? Also, would using a dessicant and oxygen scavanger/absorber tablets be a suitable alternative? Thanks!

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