Winter is coming - storing sorb

Hanssing · 29th October 2007, 17:52

I was reading on a friends DiveSorb, that it could be stored in -30dgr C.
But I think the Molecular Products says non-freezing temperature?

Anyone care to explain why such a large discrepency can exist? Is it only that Molecular has not tested, and therefor does not provide any data belwo 0dgr C?

As you can tell I'm fishing for way to store consumables in sub-zero conditions - if needed I'll change to the right sorbs.....
For now I'll just keep the sorb indoor, but is not very practical.

So how many sorbs tolerate freezing, and what causes the breakdown on the ones that don't?

HOw about the rest of the Rebreather -> especially the cells?

regards
Nicolai

Mark Chase · 29th October 2007, 18:24

Quote: (Originally Posted by Hanssing)

I was reading on a friends DiveSorb, that it could be stored in -30dgr C.
But I think the Molecular Products says non-freezing temperature?

Anyone care to explain why such a large discrepency can exist? Is it only that Molecular has not tested, and therefor does not provide any data belwo 0dgr C?

As you can tell I'm fishing for way to store consumables in sub-zero conditions - if needed I'll change to the right sorbs.....
For now I'll just keep the sorb indoor, but is not very practical.

So how many sorbs tolerate freezing, and what causes the breakdown on the ones that don't?

HOw about the rest of the Rebreather -> especially the cells?

regards
Nicolai

I live in the UK and -5 is about all we would expect in side the garage. I put my sorb on wood blocks 2" (50mm of he floor) and i have a 50mm thick sheet of polystyrene between the drum and external wall. I then use a single oil filled radiator to heat the garage to above freezing.

So far so good.

ATB

Mark

womble · 29th October 2007, 19:53

Molecular Products Ltd are on this site with that username - why not ask them?

Last winter I stored my unopened kegs of lime in the shed (-5). Once opened, I keep the keg indoors. As Mark said, so far so good

Dave Crampton · 29th October 2007, 20:57

I'd imagine that as soon as they have been opened (if not before) they have some moisture in them, as there is moisture in the air. This moisture could penitrate the sorb and then once frozen, will damage the structure of the sorb.

I thought about heating my garage with an oil filled radiator but its not very well insulated so I just brought my sorb indoors, stored under the stairs in my house.

Dave O · 29th October 2007, 21:13

My understanding was that the lime has a specific moisture content. Anything that changes that content damages the lime. Heat and cold can dry out your lime.

Mark Chase · 30th October 2007, 04:13

Quote: (Originally Posted by Dave Crampton)

I thought about heating my garage with an oil filled radiator but its not very well insulated so I just brought my sorb indoors, stored under the stairs in my house.

Bugger that, the wife might ask what it is and how much it cost

ATB

Mark

Mdemon · 30th October 2007, 08:10

"It's for drying out the drysuit, Love."

bletso · 30th October 2007, 09:38

My experience is that cells don't like sub-zero storage.

I use Draegrsorb and have never had an issue with it. It is stored in the shed. In a cold winter we may see -25C on occasion. Just make sure the cannister and sorb charge are warm before the dive. This takes 4 or more hours for a couple of kilo in the cannister.

I have found that to do a dive to 40 mfw with a unit left in the boot overnight charged and ready in 0 C conditions is really not a bright idea.

Dale

jdicediver · 30th October 2007, 16:14

Quote: (Originally Posted by Mark Chase)

Bugger that, the wife might ask what it is and how much it cost

ATB

Mark

My lowly kegs of 'sorb have been stacked in a designated a spot in "the dive closet" which is past the assortment of cylinders, pelican cases and dive equipment roller bags further down the hallway.

My CCR is currently allowed to peacefully reside on the glass kitchen table, having full surveillance of the room through the tabletop below, in a time honored harbormouth pattern to ward off any surprise attack from fast approaching dust bunnies.

Gene_Hobbs · 12th November 2007, 14:52

Unmanned Evaluation of Five Carbon Dioxide Absorbents Which were Frozen Prior to Use with the Draeger LAR V UBA (Underwater Breathing Apparatus).
Presswood. 1986 NEDU Report.
RRR ID: 4516

Sorry, don't know of anything more recent. This covers: HP sodasorb, Agasorb, Diveasorb, Draegersorb, and Protosorb

29th October 2007, 17:52	#1 (permalink)
Hanssing flap-flop ..... flap-flop Current Rebreather/s: rEvo Other Rebreather/s: rEvo Join Date: Nov 2005 Location: Denmark Posts: 407	Winter is coming - storing sorb I was reading on a friends DiveSorb, that it could be stored in -30dgr C. But I think the Molecular Products says non-freezing temperature? Anyone care to explain why such a large discrepency can exist? Is it only that Molecular has not tested, and therefor does not provide any data belwo 0dgr C? As you can tell I'm fishing for way to store consumables in sub-zero conditions - if needed I'll change to the right sorbs..... For now I'll just keep the sorb indoor, but is not very practical. So how many sorbs tolerate freezing, and what causes the breakdown on the ones that don't? HOw about the rest of the Rebreather -> especially the cells? regards Nicolai __________________ Woohooo - I can change my rEvo! Its going to be bitchin' tricked out piece of gear
(Online)

29th October 2007, 18:24	#2 (permalink)
Mark Chase I go down for ages Current Rebreather/s: Classic Kiss Other Rebreather/s: Inspiration Classic Join Date: Jan 2005 Location: Kent Posts: 2,693	Re: Winter is coming - storing sorb Quote: (Originally Posted by Hanssing) I was reading on a friends DiveSorb, that it could be stored in -30dgr C. But I think the Molecular Products says non-freezing temperature? Anyone care to explain why such a large discrepency can exist? Is it only that Molecular has not tested, and therefor does not provide any data belwo 0dgr C? As you can tell I'm fishing for way to store consumables in sub-zero conditions - if needed I'll change to the right sorbs..... For now I'll just keep the sorb indoor, but is not very practical. So how many sorbs tolerate freezing, and what causes the breakdown on the ones that don't? HOw about the rest of the Rebreather -> especially the cells? regards Nicolai I live in the UK and -5 is about all we would expect in side the garage. I put my sorb on wood blocks 2" (50mm of he floor) and i have a 50mm thick sheet of polystyrene between the drum and external wall. I then use a single oil filled radiator to heat the garage to above freezing. So far so good. ATB Mark __________________ Is it supposed to make that noise ? I took my unit to the dive shop and demanded they bolt on every thing that would fit. Join my elite diving teem and get a Tshirt "Doing It Chasey"Hammerhead Eccr Advanced Diving System
(Online)

29th October 2007, 19:53	#3 (permalink)
womble Custom Title Allowed! Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Aug 2006 Location: UK Posts: 196	Re: Winter is coming - storing sorb Molecular Products Ltd are on this site with that username - why not ask them? Last winter I stored my unopened kegs of lime in the shed (-5). Once opened, I keep the keg indoors. As Mark said, so far so good __________________ "What could possibly go wrong?? . . "
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29th October 2007, 20:57	#4 (permalink)
Dave Crampton CK #051 Current Rebreather/s: Classic Kiss Other Rebreather/s: Join Date: Apr 2005 Location: Bury St Edmunds, UK Posts: 280	Re: Winter is coming - storing sorb I'd imagine that as soon as they have been opened (if not before) they have some moisture in them, as there is moisture in the air. This moisture could penitrate the sorb and then once frozen, will damage the structure of the sorb. I thought about heating my garage with an oil filled radiator but its not very well insulated so I just brought my sorb indoors, stored under the stairs in my house.
(Offline)

29th October 2007, 21:13	#5 (permalink)
Dave O Wreck Diver Current Rebreather/s: Sport Kiss Classic Kiss Other Rebreather/s: Sport Kiss Join Date: Aug 2007 Location: NJ Posts: 125	Re: Winter is coming - storing sorb My understanding was that the lime has a specific moisture content. Anything that changes that content damages the lime. Heat and cold can dry out your lime. __________________ Proof that egos never sleep: <dave Sutton>I can do whatever I please ... that's Gods Word spoken thru my mouth.</dave Sutton> Only people who bat for the wrong team wash their undersuits......... I wanna smell piss when I go diving, not ferkin' fabric softener! <decodiver> Schizophrenics never dive solo. My Blog
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30th October 2007, 04:13	#6 (permalink)
Mark Chase I go down for ages Current Rebreather/s: Classic Kiss Other Rebreather/s: Inspiration Classic Join Date: Jan 2005 Location: Kent Posts: 2,693	Re: Winter is coming - storing sorb Quote: (Originally Posted by Dave Crampton) I thought about heating my garage with an oil filled radiator but its not very well insulated so I just brought my sorb indoors, stored under the stairs in my house. Bugger that, the wife might ask what it is and how much it cost ATB Mark __________________ Is it supposed to make that noise ? I took my unit to the dive shop and demanded they bolt on every thing that would fit. Join my elite diving teem and get a Tshirt "Doing It Chasey"Hammerhead Eccr Advanced Diving System
(Online)

30th October 2007, 08:10	#7 (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: 1,931	Re: Winter is coming - storing sorb "It's for drying out the drysuit, Love." __________________ www.southwestmafia.com "small minds talk about people, Average Minds Talk About Events, GREAT MINDS TALK ABOUT IDEAS!" The WRONG Attitude will get you killed. "Once the agenda-monkeys and perfect-worlders have moved on, perhaps we can do some diving?"
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30th October 2007, 09:38	#8 (permalink)
bletso An independent diver. Current Rebreather/s: Dolphin Home Build Other Rebreather/s: Dolphin Home Build Join Date: May 2006 Location: Louisville, KY, USA Posts: 256	Re: Winter is coming - storing sorb My experience is that cells don't like sub-zero storage. I use Draegrsorb and have never had an issue with it. It is stored in the shed. In a cold winter we may see -25C on occasion. Just make sure the cannister and sorb charge are warm before the dive. This takes 4 or more hours for a couple of kilo in the cannister. I have found that to do a dive to 40 mfw with a unit left in the boot overnight charged and ready in 0 C conditions is really not a bright idea. Dale
(Offline)

30th October 2007, 16:14	#9 (permalink)
jdicediver Wreck Trained n Dangerous Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Jun 2006 Location: Calgary, Alberta Posts: 261	Re: Winter is coming - storing sorb Quote: (Originally Posted by Mark Chase) Bugger that, the wife might ask what it is and how much it cost ATB Mark My lowly kegs of 'sorb have been stacked in a designated a spot in "the dive closet" which is past the assortment of cylinders, pelican cases and dive equipment roller bags further down the hallway. My CCR is currently allowed to peacefully reside on the glass kitchen table, having full surveillance of the room through the tabletop below, in a time honored harbormouth pattern to ward off any surprise attack from fast approaching dust bunnies. __________________ Regards; "Some people shouldn't dive...others shouldn't even get wet".
(Online)

12th November 2007, 14:52	#10 (permalink)
Gene_Hobbs Resident bibliophile Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Sep 2006 Location: Durham, NC, USA Posts: 122	Re: Winter is coming - storing sorb Unmanned Evaluation of Five Carbon Dioxide Absorbents Which were Frozen Prior to Use with the Draeger LAR V UBA (Underwater Breathing Apparatus). Presswood. 1986 NEDU Report. RRR ID: 4516 Sorry, don't know of anything more recent. This covers: HP sodasorb, Agasorb, Diveasorb, Draegersorb, and Protosorb __________________ http://rubicon-foundation.org/ Home of the Rubicon Research Repository. For help getting started with the Repository, please visit our FAQ page. PLEASE support our work. "Oxygen is addictive and deadly. Everyone who uses it will eventually die" --RW Hamilton, PhD 1991
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