Keeping the Installed Filter Dry
The installed filter can become exhausted just from atmospheric moisture via changes in atmospheric pressure as well as the constant molecular motion of gases. In my case the PMV is closed on the downstream end, but if there is no PMV then a blank plug might be used to block the outlet, and any bleed valve there closed. On the upstream side closing the purge valves should make it fairly well sealed. If not using for awhile putting the filter into the sealed ammo can with the MS supply would probably be worthwhile. After six months Coltri recommends changing the filter regardless of use. I'm hoping to stretch this out a little, but MS is so good at gathering moisture that it is not easy to prevent it.
I'm also collecting and saving the exhausted MS in case I decide later to experiment with reactivation. It is probably not worth doing, but might be interesting to experiment with. In any case it should be collected for proper disposal. I use a properly labelled tennis ball can to collect the MS in. It is easy to pour into from the cartridge after carefully cutting off the top. Keeping it in the expired cartridges would be fine too if you don't want to re-use the empty cartridge tube.
The installed filter can become exhausted just from atmospheric moisture via changes in atmospheric pressure as well as the constant molecular motion of gases. In my case the PMV is closed on the downstream end, but if there is no PMV then a blank plug might be used to block the outlet, and any bleed valve there closed. On the upstream side closing the purge valves should make it fairly well sealed. If not using for awhile putting the filter into the sealed ammo can with the MS supply would probably be worthwhile. After six months Coltri recommends changing the filter regardless of use. I'm hoping to stretch this out a little, but MS is so good at gathering moisture that it is not easy to prevent it.
I'm also collecting and saving the exhausted MS in case I decide later to experiment with reactivation. It is probably not worth doing, but might be interesting to experiment with. In any case it should be collected for proper disposal. I use a properly labelled tennis ball can to collect the MS in. It is easy to pour into from the cartridge after carefully cutting off the top. Keeping it in the expired cartridges would be fine too if you don't want to re-use the empty cartridge tube.
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