Sodasorb

James Appel · 21st February 2006, 07:23

I have been given a tub of Sodasorb 6/12, how do you think it compairs to Sofnolime? Also the Expire date is 03/06 (I assume its still good esp for shallow dives (60-70fsw) for a while (hasnt been opened... well I opened it in December and used a small amount).

Royal Red · 22nd February 2006, 01:35

I have experience with both in SCBA units. You gave a mesh size (6/12) for SodaLime but did not include the size of the SofnoLime. My experience has been that SofnoLime has a small granular size and thus can pack more granules into a given space and provide greater CO2 removal. Of course this comes with the price of greater breathing resistance through the SofnoLime. If you are unsure of the specifications for the two brands I would use the general rule of thumb that the SodaLime will only remove about 60% of what the same volume of SofnoLime would remove.

For more information you can check out the web sites of each manufacture. I do not have those sites readily available but SodaLime is manufactured by W.R.Grace Company in the USA and SofnoLime is manufactured by Molecular Products in the UK.

Sutty · 22nd February 2006, 11:59

Quote: (Originally Posted by Royal Red)

y experience has been that SofnoLime has a small granular size and thus can pack more granules into a given space and provide greater CO2 removal.

As I understand it this is not the case, as long as the granules are very small in relation to the scrubber size (not like marbles) the mass of scrubber material you can get in is independant of granule size. However the larger surface area with small granules makes it more efficient, the smaller gaps between the granules make for the higher WOB.

webslave · 22nd February 2006, 16:31

FYI - both products are soda lime. The WR Grace product name is Sodasorb.
http://www.molecularproducts.co.uk/v...cts/sofnolime/
http://sodasorb.com/English/

***jradomski*** · 22nd February 2006, 17:04

Quote: (Originally Posted by James Appel)

I have been given a tub of Sodasorb 6/12, how do you think it compairs to Sofnolime? Also the Expire date is 03/06 (I assume its still good esp for shallow dives (60-70fsw) for a while (hasnt been opened... well I opened it in December and used a small amount).

sodasorb from gracecomes in 2 mesh sizes 4-8 and 6-12, sofnolime also comes in 2 sizes 4-8 and 8-12..

In the various comparisons I have seen the reformulated 6-12 compares very closely with molecular products 8-12..

If I remember correctly, Shas from SMI told me that in their tests the 6-12 duration was within 15 minutes of the sofolime..

I really wouldn;t worry about the expiration dates on soda sorb.. Grace being primarily a medical supplier dates their sorb at a max of 2 years, when other manufactures date their products up to SIX years..

I gave up using sofnolime along time ago, the sodasorb works (and is more available world wide) just as well and its much cheaper to boot...

***caveseeker7*** · 22nd February 2006, 17:54

Quote: (Originally Posted by Royal Red)

If you are unsure of the specifications for the two brands I would use the general rule of thumb that the SodaLime will only remove about 60% of what the same volume of SofnoLime would remove.

If you are referring to Sodasorb I find that claim hard to believe.
The Navy testing on the PRISM was done with Sodasorb, and the unit managed to pass the 300 min requirement. That would translate into a stellar 500 minutes with Sofnolime! I find that rather hard to believe.

How old is the data you base that statement on?

sannerman · 26th February 2006, 00:08

Quote: (Originally Posted by caveseeker7)

If you are referring to Sodasorb I find that claim hard to believe.
The Navy testing on the PRISM was done with Sodasorb, and the unit managed to pass the 300 min requirement. That would translate into a stellar 500 minutes with Sofnolime! I find that rather hard to believe.

How old is the data you base that statement on?

I can confirm that you get about 60% from Sodasorb compared Sofnolime 8-12. BUT my experience and figures comes from a "controlled" environment and not an Rebreather, more lime and slower process/exchange from the gas. And if I was able to run the lime as hard as that in my KISS I would have a duration of about 18 hours !! So by that mean I don't know that you can really compare the higher out take that you have in an RB compared to the other environment.

/Z

Chris · 26th February 2006, 00:35

Quote: (Originally Posted by Royal Red)

If you are unsure of the specifications for the two brands I would use the general rule of thumb that the SodaLime will only remove about 60% of what the same volume of SofnoLime would remove.

Are you talking about SodaSorb to Sofnolime?

Is this from personal experience, Quantified testing or just a guess?
I run both in my PRISM and get the same hours without any problems; if your statement is true I should be well dead by now.

Cheers
Chris

***schford*** · 26th February 2006, 00:41

Quote: (Originally Posted by Chris)

Are you talking about SodaSorb to Sofnolime?

Is this from personal experience, Quantified testing or just a guess?
I run both in my PRISM and get the same hours without any problems; if your statement is true I should be well dead by now.

Cheers
Chris

Or it could just be thatyou had 5% left in one when you changed it and 50% life remaining in the other

- playing devils advocate of course!

Royal Red · 26th February 2006, 00:46

Quote: (Originally Posted by caveseeker7)

If you are referring to Sodasorb I find that claim hard to believe.
The Navy testing on the PRISM was done with Sodasorb, and the unit managed to pass the 300 min requirement. That would translate into a stellar 500 minutes with Sofnolime! I find that rather hard to believe.

How old is the data you base that statement on?

Data is from the past 6-months or so in a laboratory but does compare larger mesh Sodasorb to smaller mesh SofnoLime. Most definately will get more scrubbing potential in the same volume with smaller mesh SofnoLime as compared to the larger mesh SodaSorb. Original post did not mention mesh size of Sofnolime so it is safest to err on the extreme side. CO2 poisoning can not always be detected by the user and quite often once it is, it is too late. Not something you should screw around with. Should get all of facts on the material you are going to utilize before getting yourself into trouble.

21st February 2006, 07:23	#1 (permalink)
James Appel New Member Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Jan 2006 Location: Springfield, Oregon Posts: 60	Sodasorb I have been given a tub of Sodasorb 6/12, how do you think it compairs to Sofnolime? Also the Expire date is 03/06 (I assume its still good esp for shallow dives (60-70fsw) for a while (hasnt been opened... well I opened it in December and used a small amount).
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22nd February 2006, 01:35	#2 (permalink)
Royal Red New Member Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Feb 2006 Location: Pennsylvania, USA Posts: 8	Re: Sodasorb I have experience with both in SCBA units. You gave a mesh size (6/12) for SodaLime but did not include the size of the SofnoLime. My experience has been that SofnoLime has a small granular size and thus can pack more granules into a given space and provide greater CO2 removal. Of course this comes with the price of greater breathing resistance through the SofnoLime. If you are unsure of the specifications for the two brands I would use the general rule of thumb that the SodaLime will only remove about 60% of what the same volume of SofnoLime would remove. For more information you can check out the web sites of each manufacture. I do not have those sites readily available but SodaLime is manufactured by W.R.Grace Company in the USA and SofnoLime is manufactured by Molecular Products in the UK.
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22nd February 2006, 11:59	#3 (permalink)
Sutty Classic Kiss diver Current Rebreather/s: Classic Kiss Other Rebreather/s: Join Date: Jun 2005 Location: Glossop, Derbyshire, UK Posts: 775	Re: Sodasorb Quote: (Originally Posted by Royal Red) y experience has been that SofnoLime has a small granular size and thus can pack more granules into a given space and provide greater CO2 removal. As I understand it this is not the case, as long as the granules are very small in relation to the scrubber size (not like marbles) the mass of scrubber material you can get in is independant of granule size. However the larger surface area with small granules makes it more efficient, the smaller gaps between the granules make for the higher WOB.
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22nd February 2006, 16:31	#4 (permalink)
webslave New Member Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Feb 2005 Location: Confusion Posts: 14	Re: Sodasorb FYI - both products are soda lime. The WR Grace product name is Sodasorb. http://www.molecularproducts.co.uk/v...cts/sofnolime/ http://sodasorb.com/English/
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22nd February 2006, 17:04	#5 (permalink)
*jradomski* Moderator Current Rebreather/s: Inspiration Classic Sport Kiss Optima rEvo Other CCR Home Build Other Rebreather/s: Inspiration Vision Evolution Megalodon Classic Kiss rEvo Other CCR Home Build Join Date: Mar 2005 Location: "Da" Bronx Posts: 2,817	Re: Sodasorb Quote: (Originally Posted by James Appel) I have been given a tub of Sodasorb 6/12, how do you think it compairs to Sofnolime? Also the Expire date is 03/06 (I assume its still good esp for shallow dives (60-70fsw) for a while (hasnt been opened... well I opened it in December and used a small amount). sodasorb from gracecomes in 2 mesh sizes 4-8 and 6-12, sofnolime also comes in 2 sizes 4-8 and 8-12.. In the various comparisons I have seen the reformulated 6-12 compares very closely with molecular products 8-12.. If I remember correctly, Shas from SMI told me that in their tests the 6-12 duration was within 15 minutes of the sofolime.. I really wouldn;t worry about the expiration dates on soda sorb.. Grace being primarily a medical supplier dates their sorb at a max of 2 years, when other manufactures date their products up to SIX years.. I gave up using sofnolime along time ago, the sodasorb works (and is more available world wide) just as well and its much cheaper to boot... __________________ Joe Radomski CCR Trimix Instructor Trainer ANDI Instructor Trainer Director #10 All posts are personal opinions and DO NOT reflect any affiliated agency unless specifically stated.
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22nd February 2006, 17:54	#6 (permalink)
*caveseeker7* Who loves ya, baby Current Rebreather/s: Sport Kiss Other Rebreather/s: Prism Topaz Join Date: Jan 2005 Location: Too far from Neverland Posts: 5,318	Re: Sodasorb Quote: (Originally Posted by Royal Red) If you are unsure of the specifications for the two brands I would use the general rule of thumb that the SodaLime will only remove about 60% of what the same volume of SofnoLime would remove. If you are referring to Sodasorb I find that claim hard to believe. The Navy testing on the PRISM was done with Sodasorb, and the unit managed to pass the 300 min requirement. That would translate into a stellar 500 minutes with Sofnolime! I find that rather hard to believe. How old is the data you base that statement on? __________________ Cheers Stefan "It is still a good day if you are on the green side of the grass! Su amigo Roberto!" Sponsor Lou in Race For Life!
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26th February 2006, 00:08	#7 (permalink)
sannerman Let´s Go Down For a While Current Rebreather/s: Classic Kiss MK 15.X Other CCR Other Rebreather/s: Other CCR Join Date: Apr 2005 Location: Sweden Posts: 95	Re: Sodasorb Quote: (Originally Posted by caveseeker7) If you are referring to Sodasorb I find that claim hard to believe. The Navy testing on the PRISM was done with Sodasorb, and the unit managed to pass the 300 min requirement. That would translate into a stellar 500 minutes with Sofnolime! I find that rather hard to believe. How old is the data you base that statement on? I can confirm that you get about 60% from Sodasorb compared Sofnolime 8-12. BUT my experience and figures comes from a "controlled" environment and not an Rebreather, more lime and slower process/exchange from the gas. And if I was able to run the lime as hard as that in my KISS I would have a duration of about 18 hours !! So by that mean I don't know that you can really compare the higher out take that you have in an RB compared to the other environment. /Z __________________ Det är hårt på sjön, fast hårdare på land www.pagi.se
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26th February 2006, 00:35	#8 (permalink)
Chris Go Nude Or Go Home Current Rebreather/s: Megalodon Other Rebreather/s: Inspiration Classic Megalodon Prism Topaz Sport Kiss Join Date: Feb 2005 Location: Perth, Western Australia Posts: 601	Re: Sodasorb Quote: (Originally Posted by Royal Red) If you are unsure of the specifications for the two brands I would use the general rule of thumb that the SodaLime will only remove about 60% of what the same volume of SofnoLime would remove. Are you talking about SodaSorb to Sofnolime? Is this from personal experience, Quantified testing or just a guess? I run both in my PRISM and get the same hours without any problems; if your statement is true I should be well dead by now. Cheers Chris __________________ Megalodon Sorb and Sensors whilst in Australia www.divetub.com.au Diving & Photography @ www.uwphotog.com
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26th February 2006, 00:41	#9 (permalink)
*schford* Despotic Overlord Current Rebreather/s: Megalodon Sport Kiss Other Rebreather/s: Join Date: Jan 2005 Location: London, UK Posts: 3,662	Re: Sodasorb Quote: (Originally Posted by Chris) Are you talking about SodaSorb to Sofnolime? Is this from personal experience, Quantified testing or just a guess? I run both in my PRISM and get the same hours without any problems; if your statement is true I should be well dead by now. Cheers Chris Or it could just be thatyou had 5% left in one when you changed it and 50% life remaining in the other - playing devils advocate of course! __________________ Bailout and Kit Management account for Murphy's Law The only bad question is one you did not ask and later wish you had. Use of Rebreather World is subject to the Rebreather World Terms & Conditions of Use
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26th February 2006, 00:46	#10 (permalink)
Royal Red New Member Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Feb 2006 Location: Pennsylvania, USA Posts: 8	Re: Sodasorb Quote: (Originally Posted by caveseeker7) If you are referring to Sodasorb I find that claim hard to believe. The Navy testing on the PRISM was done with Sodasorb, and the unit managed to pass the 300 min requirement. That would translate into a stellar 500 minutes with Sofnolime! I find that rather hard to believe. How old is the data you base that statement on? Data is from the past 6-months or so in a laboratory but does compare larger mesh Sodasorb to smaller mesh SofnoLime. Most definately will get more scrubbing potential in the same volume with smaller mesh SofnoLime as compared to the larger mesh SodaSorb. Original post did not mention mesh size of Sofnolime so it is safest to err on the extreme side. CO2 poisoning can not always be detected by the user and quite often once it is, it is too late. Not something you should screw around with. Should get all of facts on the material you are going to utilize before getting yourself into trouble.
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