Scrubber Life.

TheBcDiver · 3rd November 2006, 21:58

Hi folks

Was reading a recent thread on scrubber duration and didn't want to hijack the thread.

I have a Inspo scruber that was used for 1 hour last week and then packed away in a sealed bag. it was then put back into the unit last night (thursday) for a dive that didn't materialise... I'm now looking to dive this sunday (max depth 20m, divetime prob no more than 1+ 1/2 hrs) and was wondering whether it would still be ok or should i just bin it and replace?

Cheers

James.

**Gill Envy** · 3rd November 2006, 22:27

Quote: (Originally Posted by TheBcDiver)

Hi folks

Was reading a recent thread on scrubber duration and didn't want to hijack the thread.

I have a Inspo scruber that was used for 1 hour last week and then packed away in a sealed bag. it was then put back into the unit last night (thursday) for a dive that didn't materialise... I'm now looking to dive this sunday (max depth 20m, divetime prob no more than 1+ 1/2 hrs) and was wondering whether it would still be ok or should i just bin it and replace?

Cheers

James.

my wife and I do multiple dives on the same scrubber and we keep it up to a month inbetween dives at this point. We leave it out over night to get some of the excess moisture out of it after a dive and then bag it. We keep close tabs on the total hours and depths. For deepish dives fresh sorb is used.

There is definitely a camp that will say not to risk it. I think it depends on how aggressive your dives are...we stick mostly to no deco/recreational depths, do the deepest part of the dive first, deeper dives first in a series and combine temp stick with total hours used calcuations, getting 3.5-4.5 hours on our evo's.

Since there is very little co2 in the air in a room and since that air is not being circulated through the scrubber, having it exposed for a bit is not a big deal, imho.

with the size of the scrubber on an inspo, if your one hour dive was not below 130 fsw, i would not hesitate to add another hour to hour and a half and then some, on a subsequant dive. That's just how i've been aproaching it lately...others may be more or less conservative.

TheBcDiver · 7th November 2006, 19:51

Cheers for the reply Gill, much appreciated.

James.

lizardland · 7th November 2006, 20:42

If you can be bothered trolling through the site then the Canadian Navy has a report on storage of part-used rebreather scrubbers. Basically they said if the Rebreather has been sealed then it is good to use after a long period of time. They stopped their tests at 10days of storage but suggested that longer periods may be acceptable.

I've often used scrubbers after 4-6 weeks in storage. I guess the two big things are avoiding storing it in very cold temps and not allowing any dampness to get into the loop.

diverrob · 7th November 2006, 21:36

I agree with Gill and have gone the extra step of making a scrubber saver to keep the sorp sealed and protected while the head is drying out check out this link http://www.rebreatherworld.com/gener...scrubber+saver

Rob

diverrob · 7th November 2006, 21:41

Quote: (Originally Posted by lizardland)

If you can be bothered trolling through the site then the Canadian Navy has a report on storage of part-used rebreather scrubbers. Basically they said if the Rebreather has been sealed then it is good to use after a long period of time. They stopped their tests at 10days of storage but suggested that longer periods may be acceptable.

I've often used scrubbers after 4-6 weeks in storage. I guess the two big things are avoiding storing it in very cold temps and not allowing any dampness to get into the loop.

Do you have any more info on this? I would like to read the report, I have not run accross it at work and if it is around I would like to see it. Thanks

SimonK · 8th November 2006, 12:47

Rob

Try this link

http://cradpdf.drdc.gc.ca/PDFS/zba27/p155544.pdf

Simon

Mdemon · 8th November 2006, 13:06

As above, I leave it sealed up and just use it again.

If I need/want to dry the head I'll chuck the cartridge in a plastic bag while I'm doing it to keep it clean and the humidity level constant. I doubt there is a significant airflow through a cartridge so I don't worry about sofnalime being used up.

diverrob · 8th November 2006, 13:49

Quote: (Originally Posted by Mdemon)

As above, I leave it sealed up and just use it again.

If I need/want to dry the head I'll chuck the cartridge in a plastic bag while I'm doing it to keep it clean and the humidity level constant. I doubt there is a significant airflow through a cartridge so I don't worry about sofnalime being used up.

Thanks! I look forward to reading this, as I actually know the author

Octopus · 8th November 2006, 15:30

'Narkedatninety' makes a very professional looking blanking plate for the Meg that works well

. After the dive you take the head off and the moisture pads out, then leave the scrubber inside the casing and pop the blanking plate on the top. Very simple and effective solution to storing the scrubber in an airtight environment.
Think he may do something similar for other units. Worth a look if you want to prolong your sofnolimes life.

3rd November 2006, 21:58	#1 (permalink)
TheBcDiver New Member Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Aug 2006 Location: Co. Antrim Posts: 39	Scrubber Life. Hi folks Was reading a recent thread on scrubber duration and didn't want to hijack the thread. I have a Inspo scruber that was used for 1 hour last week and then packed away in a sealed bag. it was then put back into the unit last night (thursday) for a dive that didn't materialise... I'm now looking to dive this sunday (max depth 20m, divetime prob no more than 1+ 1/2 hrs) and was wondering whether it would still be ok or should i just bin it and replace? Cheers James.
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3rd November 2006, 22:27	#2 (permalink)
Gill Envy Shearwater Copis Diver Current Rebreather/s: Other CCR Other Rebreather/s: Evolution Other CCR Join Date: Nov 2005 Location: seattle Posts: 1,294	Re: Scrubber Life. Quote: (Originally Posted by TheBcDiver) Hi folks Was reading a recent thread on scrubber duration and didn't want to hijack the thread. I have a Inspo scruber that was used for 1 hour last week and then packed away in a sealed bag. it was then put back into the unit last night (thursday) for a dive that didn't materialise... I'm now looking to dive this sunday (max depth 20m, divetime prob no more than 1+ 1/2 hrs) and was wondering whether it would still be ok or should i just bin it and replace? Cheers James. my wife and I do multiple dives on the same scrubber and we keep it up to a month inbetween dives at this point. We leave it out over night to get some of the excess moisture out of it after a dive and then bag it. We keep close tabs on the total hours and depths. For deepish dives fresh sorb is used. There is definitely a camp that will say not to risk it. I think it depends on how aggressive your dives are...we stick mostly to no deco/recreational depths, do the deepest part of the dive first, deeper dives first in a series and combine temp stick with total hours used calcuations, getting 3.5-4.5 hours on our evo's. Since there is very little co2 in the air in a room and since that air is not being circulated through the scrubber, having it exposed for a bit is not a big deal, imho. with the size of the scrubber on an inspo, if your one hour dive was not below 130 fsw, i would not hesitate to add another hour to hour and a half and then some, on a subsequant dive. That's just how i've been aproaching it lately...others may be more or less conservative. __________________ Gill Envy ...Because I wasn't born with gills! ><(°>><(°>><(°>><(°>><(°>><(°>><(°>><(°>
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7th November 2006, 19:51	#3 (permalink)
TheBcDiver New Member Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Aug 2006 Location: Co. Antrim Posts: 39	Re: Scrubber Life. Cheers for the reply Gill, much appreciated. James.
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7th November 2006, 20:42	#4 (permalink)
lizardland Yak Current Rebreather/s: MK 15.X Home Build Other Rebreather/s: Classic Kiss Home Build Join Date: Mar 2005 Location: North... Posts: 1,234	Re: Scrubber Life. If you can be bothered trolling through the site then the Canadian Navy has a report on storage of part-used rebreather scrubbers. Basically they said if the Rebreather has been sealed then it is good to use after a long period of time. They stopped their tests at 10days of storage but suggested that longer periods may be acceptable. I've often used scrubbers after 4-6 weeks in storage. I guess the two big things are avoiding storing it in very cold temps and not allowing any dampness to get into the loop. __________________ Can you imagine drifting along in the sea with your mouth open and a load of f***ing plankton going in? You'd like it, would you? www.westons-cider.co.uk Azerbaijani Association of Technical Divers Publicity Officer and Goat Wrangler
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7th November 2006, 21:36	#5 (permalink)
diverrob The Evolution of Diving Current Rebreather/s: Evolution Other SCR Other Rebreather/s: Not Bought Yet Other SCR Join Date: May 2005 Location: Victoria BC Canada Posts: 326	Re: Scrubber Life. I agree with Gill and have gone the extra step of making a scrubber saver to keep the sorp sealed and protected while the head is drying out check out this link http://www.rebreatherworld.com/gener...scrubber+saver Rob
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7th November 2006, 21:41	#6 (permalink)
diverrob The Evolution of Diving Current Rebreather/s: Evolution Other SCR Other Rebreather/s: Not Bought Yet Other SCR Join Date: May 2005 Location: Victoria BC Canada Posts: 326	Re: Scrubber Life. Quote: (Originally Posted by lizardland) If you can be bothered trolling through the site then the Canadian Navy has a report on storage of part-used rebreather scrubbers. Basically they said if the Rebreather has been sealed then it is good to use after a long period of time. They stopped their tests at 10days of storage but suggested that longer periods may be acceptable. I've often used scrubbers after 4-6 weeks in storage. I guess the two big things are avoiding storing it in very cold temps and not allowing any dampness to get into the loop. Do you have any more info on this? I would like to read the report, I have not run accross it at work and if it is around I would like to see it. Thanks
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8th November 2006, 12:47	#7 (permalink)
SimonK Custom Title Allowed! Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Oct 2005 Location: Cumbria UK Posts: 231	Re: Scrubber Life. Rob Try this link http://cradpdf.drdc.gc.ca/PDFS/zba27/p155544.pdf Simon
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8th November 2006, 13:06	#8 (permalink)
Mdemon SiegeEngine II Current Rebreather/s: Inspiration Classic Home Build Other Rebreather/s: Inspiration Classic Home Build Join Date: Feb 2007 Location: SWUK Posts: 1,902	Re: Scrubber Life. As above, I leave it sealed up and just use it again. If I need/want to dry the head I'll chuck the cartridge in a plastic bag while I'm doing it to keep it clean and the humidity level constant. I doubt there is a significant airflow through a cartridge so I don't worry about sofnalime being used up. __________________ www.southwestmafia.com "Once the agenda-monkeys and perfect-worlders have moved on, perhaps we can do some diving?"
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8th November 2006, 13:49	#9 (permalink)
diverrob The Evolution of Diving Current Rebreather/s: Evolution Other SCR Other Rebreather/s: Not Bought Yet Other SCR Join Date: May 2005 Location: Victoria BC Canada Posts: 326	Re: Scrubber Life. Quote: (Originally Posted by Mdemon) As above, I leave it sealed up and just use it again. If I need/want to dry the head I'll chuck the cartridge in a plastic bag while I'm doing it to keep it clean and the humidity level constant. I doubt there is a significant airflow through a cartridge so I don't worry about sofnalime being used up. Thanks! I look forward to reading this, as I actually know the author
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8th November 2006, 15:30	#10 (permalink)
Octopus New Member Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Feb 2006 Location: Colchester Essex Posts: 25	Re: Scrubber Life. 'Narkedatninety' makes a very professional looking blanking plate for the Meg that works well. After the dive you take the head off and the moisture pads out, then leave the scrubber inside the casing and pop the blanking plate on the top. Very simple and effective solution to storing the scrubber in an airtight environment. Think he may do something similar for other units. Worth a look if you want to prolong your sofnolimes life. __________________ "You can write what you like, you're not going to win this war!"-Capt G. Mainwaring Dads Army
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