Medical sorb versus Dive Sorb questions

Scuttle · 18th December 2006, 10:47

I am hoping to learn why is it a NO No or frowned upon to use medical grade sorb.
Lots use it without ill effects any more than the approved slime. Is it a Myth, conjured up by suppliers so that they can lighten our wallets a bit more.

Any theories or facts to start the debate.

steevke · 18th December 2006, 10:54

I use Spherasorb all the time - never had any problems using it.

It may be that 'diving grade' is more efficient (I hope so 'cause it's a lot more expensive), but I just change my medical sorb a bit more often. It's half the price anyway.

YMMV.

steven

Scuttle · 18th December 2006, 11:11

Likewise, I tend to offload medical grade early & don't push the time limits on it especially if it sits around too long between dives.

**Steve** · 18th December 2006, 11:39

Hi Jeff,
I stopped using it after speaking with John Pennyfather (30 odd years as the RAN's Chief Diving Scientist) who inspected Crusty's Inspo after he died a few years ago. Crusty was using Medisorb so this was looked at as a part of the analysis of his death (not found to be the reason which wasn't surprising to those that knew a bit about how he died). I was shown his test data and the speed at which it fails compared to Sofnolime and Draegersorb was alarming and he strenuously cautioned me against ever using it.

I had no problems with it but when a man that knows as much as he has demonstrated not to use it, I certainly listened.

Gilles · 18th December 2006, 11:44

I use Medisorb at a rate of about 3 hr per Kg in 28 degC water. 1.5 hr per Kg on dives 50m or deeper.

Scuttle · 18th December 2006, 12:07

Steve, I wonder why it fails earlier, if that's the case- same compound-maybe rougher granules?

1.5 hr per Kg on dives 50m or deeper. Same, sabgia & pretty standard dives for me, 2 dives & turf it. Always looks like it is only half used pouring out it of the scrubber.

**Steve** · 18th December 2006, 12:23

Quote: (Originally Posted by Scuttle)

Steve, I wonder why it fails earlier, if that's the case- same compound-maybe rougher granules?

Good question. No idea of an answer though. The only differences I know of between it and diving grade are; moisture content, density and it is a bit rougher as you say. I'm not sure if the composition is exactly the same and there may be more differences but I am far from being any good at industrial chemistry.

koputai · 19th December 2006, 10:35

Oh, and back to the original thread and the underlying question not actually typed. Tergosorb is diving grade sorb, not medical grade.

Cheers,
Jason.

Scuttle · 19th December 2006, 12:31

G'day Jas,
Not tried Tergosorb. I use Medisorb for some years now, hence the question.
Bazza post on DiveOz showed it could be used in both under or above applications. May have give it a whirl if the costs are about the same.

I'm still looking for some one else to tell me a myth buster.

***sadave*** · 19th December 2006, 17:56

Quote: (Originally Posted by decoweenie)

Could a moderator split the thread so we don't hijack this thread any longer ? Please...

Your wish is my command.

18th December 2006, 10:47	#1 (permalink)
Scuttle 1 Grumpy ole skipper Current Rebreather/s: Classic Kiss Dolphin Other Rebreather/s: Dolphin Join Date: May 2005 Location: Jan Juc, Vic, Australia Posts: 239	Medical sorb versus Dive Sorb questions I am hoping to learn why is it a NO No or frowned upon to use medical grade sorb. Lots use it without ill effects any more than the approved slime. Is it a Myth, conjured up by suppliers so that they can lighten our wallets a bit more. Any theories or facts to start the debate.
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18th December 2006, 10:54	#2 (permalink)
steevke Custom Title Allowed! Current Rebreather/s: Inspiration Vision Other Rebreather/s: Sport Kiss Join Date: Jul 2005 Location: Belgium Posts: 311	Re: Medical sorb versus Dive Sorb questions I use Spherasorb all the time - never had any problems using it. It may be that 'diving grade' is more efficient (I hope so 'cause it's a lot more expensive), but I just change my medical sorb a bit more often. It's half the price anyway. YMMV. steven
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18th December 2006, 11:11	#3 (permalink)
Scuttle 1 Grumpy ole skipper Current Rebreather/s: Classic Kiss Dolphin Other Rebreather/s: Dolphin Join Date: May 2005 Location: Jan Juc, Vic, Australia Posts: 239	Re: Medical sorb versus Dive Sorb questions Likewise, I tend to offload medical grade early & don't push the time limits on it especially if it sits around too long between dives.
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18th December 2006, 11:39	#4 (permalink)
Steve Ladies bring a plate Current Rebreather/s: Megalodon Home Build Other Rebreather/s: Not Bought Yet Inspiration Classic Sport Kiss Classic Kiss MK 15.X Home Build Join Date: Feb 2005 Location: Perth - Australia Posts: 1,117	Re: Medical sorb versus Dive Sorb questions Hi Jeff, I stopped using it after speaking with John Pennyfather (30 odd years as the RAN's Chief Diving Scientist) who inspected Crusty's Inspo after he died a few years ago. Crusty was using Medisorb so this was looked at as a part of the analysis of his death (not found to be the reason which wasn't surprising to those that knew a bit about how he died). I was shown his test data and the speed at which it fails compared to Sofnolime and Draegersorb was alarming and he strenuously cautioned me against ever using it. I had no problems with it but when a man that knows as much as he has demonstrated not to use it, I certainly listened. __________________ WARNING: I contain occasional coarse language, extreme sexual references, nudity, and adult themes, which may offend some people - Usually churchy types.
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18th December 2006, 11:44	#5 (permalink)
Gilles Worship the feminine Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Sep 2005 Location: Den Haag (Netherlands) Posts: 762	Re: Medical sorb versus Dive Sorb questions I use Medisorb at a rate of about 3 hr per Kg in 28 degC water. 1.5 hr per Kg on dives 50m or deeper. __________________ Gilles http://www.dirrebreather.com
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18th December 2006, 12:07	#6 (permalink)
Scuttle 1 Grumpy ole skipper Current Rebreather/s: Classic Kiss Dolphin Other Rebreather/s: Dolphin Join Date: May 2005 Location: Jan Juc, Vic, Australia Posts: 239	Re: Medical sorb versus Dive Sorb questions Steve, I wonder why it fails earlier, if that's the case- same compound-maybe rougher granules? 1.5 hr per Kg on dives 50m or deeper. Same, sabgia & pretty standard dives for me, 2 dives & turf it. Always looks like it is only half used pouring out it of the scrubber.
(Offline)

18th December 2006, 12:23	#7 (permalink)
Steve Ladies bring a plate Current Rebreather/s: Megalodon Home Build Other Rebreather/s: Not Bought Yet Inspiration Classic Sport Kiss Classic Kiss MK 15.X Home Build Join Date: Feb 2005 Location: Perth - Australia Posts: 1,117	Re: Medical sorb versus Dive Sorb questions Quote: (Originally Posted by Scuttle) Steve, I wonder why it fails earlier, if that's the case- same compound-maybe rougher granules? Good question. No idea of an answer though. The only differences I know of between it and diving grade are; moisture content, density and it is a bit rougher as you say. I'm not sure if the composition is exactly the same and there may be more differences but I am far from being any good at industrial chemistry. __________________ WARNING: I contain occasional coarse language, extreme sexual references, nudity, and adult themes, which may offend some people - Usually churchy types.
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19th December 2006, 10:35	#8 (permalink)
koputai Subsea Systems Current Rebreather/s: MK 15.X Other CCR Other SCR Other Rebreather/s: Not Bought Yet Other CCR Other SCR Join Date: Jul 2005 Location: Sydney, Australia Posts: 333	Re: Medical sorb versus Dive Sorb questions Oh, and back to the original thread and the underlying question not actually typed. Tergosorb is diving grade sorb, not medical grade. Cheers, Jason. Last edited by sadave : 19th December 2006 at 17:56. Reason: Copied post to accidents thread, removed OT stuff from here.
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19th December 2006, 12:31	#9 (permalink)
Scuttle 1 Grumpy ole skipper Current Rebreather/s: Classic Kiss Dolphin Other Rebreather/s: Dolphin Join Date: May 2005 Location: Jan Juc, Vic, Australia Posts: 239	Re: Medical sorb versus Dive Sorb questions G'day Jas, Not tried Tergosorb. I use Medisorb for some years now, hence the question. Bazza post on DiveOz showed it could be used in both under or above applications. May have give it a whirl if the costs are about the same. I'm still looking for some one else to tell me a myth buster.
(Offline)

19th December 2006, 17:56	#10 (permalink)
*sadave* Couldn't be bothered... Current Rebreather/s: Sport Kiss Other Rebreather/s: Not Bought Yet Classic Kiss Join Date: Jun 2005 Location: Brisbane, Queensland Posts: 1,053	Re: Medical sorb versus Dive Sorb questions Quote: (Originally Posted by decoweenie) Could a moderator split the thread so we don't hijack this thread any longer ? Please... Your wish is my command. __________________ Wave!
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